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Realization of an Adaptive Radiative Cooler with a Multilayer-Filter VO2-Based Fabry–Pérot Cavity Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-04-01 Hengli Xie, Huaiyuan Yin, Chunzhen Fan
A high-performance adaptive radiative cooler comprising a multilayer-filter VO2-based Fabry–Pérot (FP) cavity is proposed. The bottom FP cavity has four layers, VO2/NaCl/PVC/Ag. Based on the phase transition of VO2, the average emissivity in the transparent window can be switched from 3.7% to 96.3%. Additionally, the average emissivity can also be adjusted with external strain to the PVC layer, providing
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Magnetic Switching Dynamics and Tunnel Magnetoresistance Effect Based on Spin-Splitting Noncollinear Antiferromagnet Mn3Pt Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-04-01 Meng Zhu, Jianting Dong, Xinlu Li, Fanxing Zheng, Ye Zhou, Kun Wu, Jia Zhang
In comparison to ferromagnets, antiferromagnets are believed to have superior advantages for applications in next-generation magnetic storage devices, including fast spin dynamics, vanishing stray fields and robust against external magnetic field, etc. However, unlike ferromagnetic orders, which could be detected through tunneling magnetoresistance effect in magnetic tunnel junctions, the antiferromagnetic
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Dark Localized Waves in Shallow Waters: Analysis within an Extended Boussinesq System Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-04-01 Zhengping Yang, Wei-Ping Zhong, Milivoj Belić
We study dark localized waves within a nonlinear system based on the Boussinesq approximation, describing the dynamics of shallow water waves. Employing symbolic calculus, we apply the Hirota bilinear method to transform an extended Boussinesq system into a bilinear form, and then use the multiple rogue wave method to obtain its dark rational solutions. Exploring the first- and second-order dark solutions
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Tuning Second Chern Number in a Four-Dimensional Topological Insulator by High-Frequency Time-Periodic Driving Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-04-01 Zheng-Rong Liu, Rui Chen, Bin Zhou
Floquet engineering has attracted considerable attention as a promising approach for tuning topological phase transitions. We investigate the effects of high-frequency time-periodic driving in a four-dimensional (4D) topological insulator, focusing on topological phase transitions at the off-resonant quasienergy gap. The 4D topological insulator hosts gapless three-dimensional boundary states, characterized
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Balancing the Quantum Speed Limit and Instantaneous Energy Cost in Adiabatic Quantum Evolution Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-04-01 Jianwen Xu, Yujia Zhang, Wen Zheng, Haoyang Cai, Haoyu Zhou, Xianke Li, Xudong Liao, Yu Zhang, Shaoxiong Li, Dong Lan, Xinsheng Tan, Yang Yu
Adiabatic time-optimal quantum controls are extensively used in quantum technologies to break the constraints imposed by short coherence times. However, practically it is crucial to consider the trade-off between the quantum evolution speed and instantaneous energy cost of process because of the constraints in the available control Hamiltonian. Here, we experimentally show that using a transmon qubit
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Orbital-Ordering Driven Simultaneous Tunability of Magnetism and Electric Polarization in Strained Monolayer VCl3 Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-04-01 Deping Guo, Cong Wang, Lvjin Wang, Yunhao Lu, Hua Wu, Yanning Zhang, Wei Ji
Two-dimensional (2D) van der Waals magnetic materials have promising and versatile electronic and magnetic properties in the 2D limit, indicating a considerable potential to advance spintronic applications. Theoretical predictions thus far have not ascertained whether monolayer VCl3 is a ferromagnetic (FM) or anti-FM monolayer; this also remains to be experimentally verified. We theoretically investigate
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Magneto-optic Kerr Effect Measurement of TbMn6Sn6 at mK Temperature Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-04-01 Dai-Qiang Huang, Yang Wang, He Wang, Jian Wang, Yang Liu
Novel electron states stabilized by Coulomb interactions attract tremendous interests in condensed matter physics. These states are studied by corresponding phase transitions occurring at extreme conditions such as mK temperatures and high magnetic field. In this work, we introduce a magneto-optical Kerr effect measurement system to comprehensively explore these phases in addition to conventional transport
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Pressure-Tuned Intrinsic Anomalous Hall Conductivity in Kagome Magnets RV6Sn6 (R = Gd, Tb) Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-04-01 Xiangming Kong, Zicheng Tao, Rui Zhang, Wei Xia, Xu Chen, Cuiying Pei, Tianping Ying, Yanpeng Qi, Yanfeng Guo, Xiaofan Yang, Shiyan Li
Exploration of exotic phenomena in magnetic topological systems is at the frontier of condensed matter physics, holding a significant promise for applications in topological spintronics. However, complex magnetic structures carrying nontrivial topological properties hinder its progresses. Here, we investigate the pressure effect on the novel topological kagome magnets GdV6Sn6 and TbV6Sn6 to dig out
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Some Modified Equations of the Sine-Hilbert Type Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-04-01 Ling-Juan Yan, Ya-Jie Liu, Xing-Biao Hu
Three modified sine-Hilbert (sH)-type equations, i.e., the modified sH equation, the modified damped sH equation, and the modified nonlinear dissipative system, are proposed, and their bilinear forms are provided. Based on these bilinear equations, some exact solutions to the three modified equations are derived.
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Unveiling of Terahertz Emission from Ultrafast Demagnetization and the Anomalous Hall Effect in a Single Ferromagnetic Film Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-04-01 Zhiqiang Lan, Zhangshun Li, Haoran Xu, Fan Liu, Zuanming Jin, Yan Peng, Yiming Zhu
Using THz emission spectroscopy, we investigate the elementary spin dynamics in ferromagnetic single-layer Fe on a sub-picosecond timescale. We demonstrate that THz radiation changes its polarity with reversal of the magnetization applied by the external magnetic field. In addition, it is found that the sign of THz polarity excited from different sides is defined by the thickness of the Fe layer and
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Theory for Charge Density Wave and Orbital-Flux State in Antiferromagnetic Kagome Metal FeGe Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-04-01 Hai-Yang Ma, Jia-Xin Yin, M. Zahid Hasan, Jianpeng Liu
We theoretically study the charge order and orbital magnetic properties of a new type of antiferromagnetic kagome metal FeGe. Based on first-principles density functional theory calculations, we study the electronic structures, Fermi-surface quantum fluctuations, as well as phonon properties of the antiferromagnetic kagome metal FeGe. It is found that charge density wave emerges in such a system due
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Interaction between Surface Acoustic Wave and Quantum Hall Effects Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-04-01 Xiao Liu, Mengmeng Wu, Renfei Wang, Xinghao Wang, Wenfeng Zhang, Yujiang Dong, Rui-Rui Du, Yang Liu, Xi Lin
Surface acoustic wave (SAW) is a powerful technique for investigating quantum phases appearing in two-dimensional electron systems. The electrons respond to the piezoelectric field of SAW through screening, attenuating its amplitude, and shifting its velocity, which is described by the relaxation model. In this work, we systematically study this interaction using orders of magnitude lower SAW amplitude
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Data-Driven Ai- and Bi-Soliton of the Cylindrical Korteweg–de Vries Equation via Prior-Information Physics-Informed Neural Networks Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-04-01 Shifang Tian, Biao Li, Zhao Zhang
By the modifying loss function MSE and training area of physics-informed neural networks (PINNs), we propose a neural networks model, namely prior-information PINNs (PIPINNs). We demonstrate the advantages of PIPINNs by simulating Ai- and Bi-soliton solutions of the cylindrical Korteweg–de Vries (cKdV) equation. Numerical experiments show that our proposed model is able not only to simulate these solitons
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Critical Opalescence and Its Impact on the Jet Quenching Parameter q^ Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-04-01 Jing Wu, Shanshan Cao, Feng Li
Jet quenching parameter q^ is essential for characterizing the interaction strength between jet partons and nuclear matter. Based on the quark-meson model, we develop a new framework for calculating q^ at finite chemical potentials, in which q^ is related to the spectral function of the chiral order parameter. A mean field perturbative calculation up to the one-loop order indicates that the momentum
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MWCNT Doped Reverse-Mode Polymer Network Liquid Crystals with Frequency Response Property Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-03-01 Jiajun Li, Dongchao Ji, Zhibo Zhang, Yanan Yang, Ruicong Zhang, Tianyu Wang, Yumin Zhang, Wenxin Cao, Jiaqi Zhu
Polymer-liquid crystals (PLCs) are common materials for smart windows. However, PLC smart windows usually require high driving voltage to maintain transparency. We synthesized a novel PLC smart film by doping multi-wall carbon nanotubes (MWCNTs) into a reverse-mode polymer network liquid crystal (R-PNLC). It is found that doping MWCNTs could effectively reduce the threshold voltage (V th) of R-PNLC
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Experimental Investigation of the Anisotropic Thermal Conductivity of C/SiC Composite Thin Slab Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-03-01 Ke-Fan Wu, Hu Zhang, Gui-Hua Tang
Fiber-reinforced composites possess anisotropic mechanical and heat transfer properties due to their anisotropic fibers and structure distribution. In C/SiC composites, the out-of-plane thermal conductivity has mainly been studied, whereas the in-plane thermal conductivity has received less attention due to their limited thickness. In this study, the slab module of a transient plane source method is
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C-Type Antiferromagnetic Structure of Topological Semimetal CaMnSb2 Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-03-01 Bo Li, Xu-Tao Zeng, Qianhui Xu, Fan Yang, Junsen Xiang, Hengyang Zhong, Sihao Deng, Lunhua He, Juping Xu, Wen Yin, Xingye Lu, Huiying Liu, Xian-Lei Sheng, Wentao Jin
Determination of the magnetic structure and confirmation of the presence or absence of inversion ( P ) and time reversal ( T ) symmetry is imperative for correctly understanding the topological magnetic materials. Here high-quality single crystals of the layered manganese pnictide CaMnSb2 are synthesized using the self-flux method. De Haas–van Alphen oscillations indicate a nontrivial Berry phase of
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Nontrivial Topological Phases in Ternary Borides M2XB2 (M=W, Mo; X=Co, Ni) Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-03-01 Danwen Yuan, Changming Yue, Yuefang Hu, Wei Zhang
The nontrivial band topologies protected by certain symmetries have attracted significant interest in condensed matter physics. The discoveries of nontrivial topological phases in real materials provide a series of archetype materials to further explore the topological physics. Ternary borides M2XB2 (M = W, Mo; X = Co, Ni) have been widely investigated as the wear-resistant and high-hardness materials
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An LED-Side-Pumped Intracavity Frequency-Doubled Nd,Ce:YAG Laser Producing a 2W Q-Switched Red Beam Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-03-01 Jianping Shen, Shaocong Xu, Peng LU, Rongrong Jiang, Wei Wang, Siwei Zhang, Fengyang Xing, Yang Chen, Liang Chen
We report a high-average-power acousto-optic (AO) Q-switched intracavity frequency-doubled red laser based on a high-efficiency light-emitting-diode (LED) pumped two-rod Nd,Ce:YAG laser module. Under quasi-continuous wave operation conditions, a maximum output power of 1319.08 nm wavelength was achieved at 11.26 W at a repetition rate of 100 Hz, corresponding to a maximum optical efficiency of 13.9%
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Dynamical t/U Expansion of the Doped Hubbard Model Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-03-01 Wenxin Ding, Rong Yu
We construct a new U(1) slave-spin representation for the single-band Hubbard model in the large-U limit. The mean-field theory in this representation is more amenable to describe both the spin-charge-separation physics of the Mott insulator at half-filling and the strange metal behavior at finite doping. By employing a dynamical Green’s function theory for slave spins, we calculate the single-particle
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Solving Quantum Many-Particle Models with Graph Attention Network Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-03-01 Qi-Hang Yu, Zi-Jing Lin
Deep learning methods have been shown to be effective in representing ground-state wavefunctions of quantum many-body systems, however the existing approaches cannot be easily used for non-square like or large systems. Here, we propose a variational ansatz based on the graph attention network (GAT) which learns distributed latent representations and can be used on non-square lattices. The GAT-based
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Interstitial Doping of SnO2 Film with Li for Indium-Free Transparent Conductor Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-03-01 Xingqian Chen, Haozhen Li, Wei Chen, Zengxia Mei, Alexander Azarov, Andrej Kuznetsov, Xiaolong Du
SnO2 films exhibit significant potential as cost-effective and high electron mobility substitutes for In2O3 films. In this study, Li is incorporated into the interstitial site of the SnO2 lattice resulting in an exceptionally low resistivity of 2.028 × 10−3 Ω⋅cm along with a high carrier concentration of 1.398 × 1020 cm−3 and carrier mobility of 22.02 cm2/V⋅s. Intriguingly, Li i readily forms in amorphous
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Opportunities of Advanced Physical Studies at the Hefei Advanced Light Facility Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-03-01 Zhe Sun, Donglai Feng
Synchrotron radiation has transformed the role of x-rays as a mainstream tool for probing the atomic and electronic structure of materials. Synchrotron-based x-ray sciences have been widely used to study the microscopic structure, electronic states, chemical composition, and other properties of materials in fields such as quantum materials, soft matter, energy storage, catalysis, biology, and electronics
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Hybrid Skin-Topological Effect Induced by Eight-Site Cells and Arbitrary Adjustment of the Localization of Topological Edge States Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-03-01 Jianzhi Chen, Aoqian Shi, Yuchen Peng, Peng Peng, Jianjun Liu
Hybrid skin-topological effect (HSTE) in non-Hermitian systems exhibits both the skin effect and topological protection, offering a novel mechanism for localization of topological edge states (TESs) in electrons, circuits, and photons. However, it remains unclear whether the HSTE can be realized in quasicrystals, and the unique structure of quasicrystals with multi-site cells may provide novel localization
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Production of the X(4014) as the Spin-2 Partner of X(3872) in e + e − Collisions Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-03-01 Pan-Pan Shi, Vadim Baru, Feng-Kun Guo, Christoph Hanhart, Alexey Nefediev
In 2021, the Belle collaboration reported the first observation of a new structure in the ψ(2S)γ final state produced in the two-photon fusion process. In the hadronic molecule picture, this new structure can be associated with the shallow isoscalar D*D¯* bound state and as such is an excellent candidate for the spin-2 partner of the X(3872) with the quantum numbers J PC = 2++ conventionally named
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Analysis of Strong Coupling Constant with Machine Learning and Its Application Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-03-01 Xiao-Yun Wang, Chen Dong, Xiang Liu
We investigate the nature of the strong coupling constant and related physics. Through the analysis of accumulated experimental data around the world, we employ the ability of machine learning to unravel its physical laws. The result of our efforts is a formula that captures the expansive panorama of the distribution of the strong coupling constant across the entire energy range. Importantly, this
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Anisotropic Band Evolution of Bulk Black Phosphorus Induced by Uniaxial Tensile Strain Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-03-01 Yafeng Deng, Yilin Zhang, Yafei Zhao, Yongkang Xu, Xingze Dai, Shuanghai Wang, Xianyang Lu, Yao Li, Yongbing Xu, Liang He
We investigate the anisotropic band structure and its evolution under tensile strains along different crystallographic directions in bulk black phosphorus (BP) using angle-resolved photoemission spectroscopy and density functional theory. The results show that there are band crossings in the Z–L (armchair) direction, but not in the Z–A (zigzag) direction. The corresponding dispersion-k distributions
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Hard Superconducting Gap in PbTe Nanowires Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-03-01 Yichun Gao, Wenyu Song, Shuai Yang, Zehao Yu, Ruidong Li, Wentao Miao, Yuhao Wang, Fangting Chen, Zuhan Geng, Lining Yang, Zezhou Xia, Xiao Feng, Yunyi Zang, Lin Li, Runan Shang, Qi-Kun Xue, Ke He, Hao Zhang
Semiconductor nanowires coupled to a superconductor provide a powerful testbed for quantum device physics such as Majorana zero modes and gate-tunable hybrid qubits. The performance of these quantum devices heavily relies on the quality of the induced superconducting gap. A hard gap, evident as vanishing subgap conductance in tunneling spectroscopy, is both necessary and desired. A hard gap has been
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Tuning Excitation Transport in a Dissipative Rydberg Ring Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-03-01 Yiwen Han, Wei Yi
We demonstrate the flexible tunability of excitation transport in Rydberg atoms, under the interplay of controlled dissipation and interaction-induced synthetic flux. Considering a minimum four-site setup, i.e., a triangular configuration with an additional output site, we study the transport of a single excitation, injected into a vertex of the triangle, through the structure. While the long-range
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Interception of Layered LP-N and HLP-N at Ambient Conditions by Confined Template Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-03-01 Dong-Xue Wang, Jing Fu, Yi Li, Zhen Yao, Shuang Liu, Bing-Bing Liu
We propose a feasible strategy of intercepting the layered polymeric nitrogen (LP-N) and hexagonal layered polymeric nitrogen (HLP-N) at ambient conditions by using the confinement templates. The stable mechanism of confined LP-N and HLP-N at ambient conditions is revealed, namely the synergistic effect of charge transfer and vdW confinement effect. The influence rule of interlayer spacing on the stability
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Quantum State-Resolved Nonadiabatic Dynamics of the H+NaF → Na+HF Reaction Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-03-01 Ye Mao, Hanghang Chen, Zijiang Yang, Bayaer Buren, Maodu Chen
The H + NaF reaction is investigated at the quantum state-resolved level using the time-dependent wave-packet method based on a set of accurate diabatic potential energy surfaces. Oscillatory structures in the total reaction probability indicate the presence of the short-lived intermediate complex, attributed to a shallow potential well and exothermicity. Ro-vibrational state-resolved integral cross
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Visualizing the Local Twist Angle Variation within and between Domains of Twisted Bilayer Graphene Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-03-01 Jiawei Hu, Shiyu Zhu, Qianying Hu, Yunhao Wang, Chengmin Shen, Haitao Yang, Xiaoshan Zhu, Qing Huan, Yang Xu, Hong-Jun Gao
Moiré superlattices in twisted two-dimensional materials have emerged as ideal platforms for engineering quantum phenomena, which are highly sensitive to twist angles, including both the global value and the spatial inhomogeneity. However, only a few methods provide spatial-resolved information for characterizing local twist angle distribution. Here we directly visualize the variations of local twist
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Two-Body Hadronic Weak Decays of Bottomed Hadrons Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-03-01 Ying Zhang, Guangzhao He, Quanxing Ye, Da-Cheng Yan, Jun Hua, Qian Wang
The structure of light diquarks plays a crucial role in formation of exotic hadrons beyond the conventional quark model, especially with regard to the line shapes of bottomed hadron decays. We study the two-body hadronic weak decays of bottomed baryons and bottomed mesons to probe the light diquark structure and to pin down the quark–quark correlations in the diquark picture. It is found that the light
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High-Performance Organic Field-Effect Transistors Based on Two-Dimensional Vat Orange 3 Crystals Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-03-01 Ning Yan, Zhiren Xiong, Chengbing Qin, Xiaoxi Li
The exploration and research of low-cost, environmentally friendly, and sustainable organic semiconductor materials are of immense significance in various fields, including electronics, optoelectronics, and energy conversion. Unfortunately, these semiconductors have almost poor charge transport properties, which range from ∼ 10−4 cm2⋅V−1⋅s−1 to ∼ 10−2 cm2⋅V−1⋅s−1. Vat orange 3, as one of these organic
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Constructing Hopf Insulator from Geometric Perspective of Hopf Invariant Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-03-01 Zhi-Wen Chang, Wei-Chang Hao, Miguel Bustamante, Xin Liu
We propose a method to construct Hopf insulators based on the study of topological defects from the geometric perspective of Hopf invariant I. Firstly, we prove two types of topological defects naturally inhering in the inner differential structure of the Hopf mapping. One type is the four-dimensional point defects, which lead to a topological phase transition occurring at the Dirac points. The other
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Engineering Quantum Criticality for Quantum Dot Power Harvesting Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-03-01 Jin-Yi Wang, Lei-Lei Nian, Jing-Tao Lü
Coupling of quantum-dot circuits to microwave photons enables us to investigate photon-assisted quantum transport. Here, we revisit this typical circuit quantum electrodynamical setup by introducing the Kerr nonlinearity of photons. By exploiting quantum critical behavior, we propose a powerful scheme to control the power-harvesting efficiency in the microwave regime, where the driven-dissipative optical
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Tunable Three-Wavelength Fiber Laser and Transient Switching between Three-Wavelength Soliton and Q-Switched Mode-Locked States Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-03-01 Zhi-Zeng Si, Chao-Qing Dai, Wei Liu
We report a passive mode-locked fiber laser that can realize single-wavelength tuning and multi-wavelength spacing tuning simultaneously. The tuning range is from 1528 nm–1560 nm, and up to three bands of soliton states can be output at the same time. These results are confirmed by a nonlinear Schrödinger equation model based on the split-step Fourier method. In addition, we reveal a way to transform
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Heteronuclear Magnetisms with Ultracold Spinor Bosonic Gases in Optical Lattices Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-02-01 Yongqiang Li, Chengkun Xing, Ming Gong, Guangcan Guo, Jianmin Yuan
Motivated by recent realizations of spin-1 NaRb mixtures in the experiments [Phys. Rev. Lett. 114, 255301 (2015); Phys. Rev. Lett. 128, 223201 (2022)], we investigate heteronuclear magnetism in the Mott-insulating regime. Different from the identical mixtures where the boson statistics only admits even parity states from angular momentum composition, for heteronuclear atoms in principle all angular
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Strong Anisotropic Order Parameters at All-Nitride Ferromagnet/Superconductor Interfaces Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-02-01 Qiao Jin, Meng Yang, Guozhu Song, Nan Zhao, Shengru Chen, Haitao Hong, Ting Cui, Dongke Rong, Qianying Wang, Yiyan Fan, Chen Ge, Can Wang, Jiachang Bi, Yanwei Cao, Liusuo Wu, Shanmin Wang, Kui-Juan Jin, Zhi-Gang Cheng, Er-Jia Guo
Proximity effects between superconductors and ferromagnets (SC/FM) hold paramount importance in comprehending the spin competition transpiring at their interfaces. This competition arises from the interplay between Cooper pairs and ferromagnetic exchange interactions. The proximity effects between transition metal nitrides (TMNs) are scarcely investigated due to the formidable challenges of fabricating
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Joint Authentication Public Network Cryptographic Key Distribution Protocol Based on Single Exposure Compressive Ghost Imaging Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-02-01 Wen-Kai Yu, Shuo-Fei Wang, Ke-Qian Shang
In the existing ghost-imaging-based cryptographic key distribution (GCKD) protocols, the cryptographic keys need to be encoded by using many modulated patterns, which undoubtedly incurs long measurement time and huge memory consumption. Given this, based on snapshot compressive ghost imaging, a public network cryptographic key distribution protocol is proposed, where the cryptographic keys and joint
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Intense Mid-Infrared Laser Pulse Generated via Flying-Mirror Red-Shifting in Near-Critical-Density Plasmas Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-02-01 Yu Lu, Dong-Ao Li, Qian-Ni Li, Fu-Qiu Shao, Tong-Pu Yu
Relativistic femtosecond mid-infrared pulses can be generated efficiently by laser interaction with near-critical-density plasmas. It is found theoretically and numerically that the radiation pressure of a circularly polarized laser pulse first compresses the plasma electrons to form a dense flying mirror with a relativistic high speed. The pulse reflected by the mirror is red-shifted to the mid-infrared
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Synthesis Methods and Property Control of Two-Dimensional Magnetic Materials Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-02-01 Ming-Shuang Li, Hui-Min Li, Song Liu
Two-dimensional (2D) magnetic materials have been demonstrated to have excellent chemical, optical, electrical, and magnetic properties, particularly in the development of multifunctional electronic and spin electronic devices, showcasing tremendous potential. Therefore, corresponding synthesis techniques for 2D magnetic materials that offer high quality, high yield, low cost, time-saving, and simplicity
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Ultrathin Limit on the Anisotropic Superconductivity of Single-Layered Cuprate Films Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-02-01 Feng Ran, Pan Chen, Dingyi Li, Peiyu Xiong, Zixin Fan, Haoming Ling, Yan Liang, Jiandi Zhang
Exploring dimensionality effects on cuprates is important for understanding the nature of high-temperature superconductivity. By atomically layer-by-layer growth with oxide molecular beam epitaxy, we demonstrate that La2–x Sr x CuO4 (x = 0.15) thin films remain superconducting down to 2 unit cells of thickness but quickly reach the maximum superconducting transition temperature at and above 4 unit
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Localization Dynamics at the Exceptional Point of Non-Hermitian Creutz Ladder Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-02-01 S. M. Zhang, T. Y. He, L. Jin
We propose a quasi-one-dimensional non-Hermitian Creutz ladder with an entirely flat spectrum by introducing alternating gain and loss components while maintaining inversion symmetry. Destructive interference generates a flat spectrum at the exceptional point, where the Creutz ladder maintains coalesced and degenerate eigenvalues with compact localized states distributed in a single plaquette. All
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Vortex Quantum Droplets under Competing Nonlinearities Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-02-01 Gui-hua Chen, Hong-cheng Wang, Hai-ming Deng, Boris A. Malomed
This concise review summarizes recent advancements in theoretical studies of vortex quantum droplets (VQDs) in matter-wave fields. These are robust self-trapped vortical states in two- and three-dimensional (2D and 3D) Bose–Einstein condensates (BECs) with intrinsic nonlinearity. Stability of VQDs is provided by additional nonlinearities resulting from quantum fluctuations around mean-field states
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e+e−→Λc+Λ¯c− Cross Sections and the Λc+ Electromagnetic Form Factors within the Extended Vector Meson Dominance Model Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-02-01 Cheng Chen, Bing Yan, Ju-Jun Xie
Within the extended vector meson dominance model, we investigate the e+e−→Λc+Λ¯c− reaction and the electromagnetic form factors of the charmed baryon Λc+ . The model parameters are determined by fitting them to the cross sections of the process e+e−→Λc+Λ¯c− and the magnetic form factor |G M| of Λc+ . By considering four charmonium-like states, called ψ(4500), ψ(4660), ψ(4790), and ψ(4900), we can well
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Exploring Sulfur Chemistry in TMC-1 with NSRT Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-02-01 Wasim Iqbal, Xiaohu Li, Juan Tuo, Ryszard Szczerba, Yanan Feng, Zhenzhen Miao, Jiangchao Yang, Jixing Ge, Gleb Fedoseev, Donghui Quan, Qiang Chang, Chuan-Lu Yang, Tao Yang, Gao-Lei Hou, Yong Zhang, Xuan Fang, Xia Zhang, Fangfang Li, Rong Ma, Xiaomin Song, Zhiping Kou, Yuxuan Sun
There have been several studies on sulfur depletion in dense cores like TMC-1 (Taurus Molecular Cloud 1), employing updated reaction networks for sulfur species to explain the missing sulfur in the gas within dense clouds. Most of these studies used a C/O ratio of 0.7 or lower. We present NSRT (NanShan 26m Radio Telescope) observations of TMC-1 alongside results from time-dependent chemical simulations
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Profiling Electronic and Phononic Band Structures of Semiconductors at Finite Temperatures: Methods and Applications Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-02-01 Xie Zhang, Jun Kang, Su-Huai Wei
Semiconductor devices are often operated at elevated temperatures that are well above zero Kelvin, which is the temperature in most first-principles density functional calculations. Computational approaches to computing and understanding the properties of semiconductors at finite temperatures are thus in critical demand. In this review, we discuss the recent progress in computationally assessing the
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A Search for Radio Pulsars in Supernova Remnants Using FAST with One Pulsar Discovered Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-02-01 Zhen Zhang, Wen-Ming Yan, Jian-Ping Yuan, Na Wang, Jun-Tao Bai, Zhi-Gang Wen, Bao-Da Li, Jin-Tao Xie, De Zhao, Yu-Bin Wang, Nan-Nan Zhai
We report the results of a search for radio pulsars in five supernova remnants (SNRs) with the FAST telescope. The observations were made using the 19-beam receiver in “snapshot” mode. The integration time for each pointing was 10 min. We discovered a new pulsar, PSR J1845–0306, which has a spin period of 983.6 ms and a dispersion measure of 444.6 ± 2.0 cm−3⋅pc, in observations of SNR G29.6+0.1. To
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Three-Wave Mixing of Dipole Solitons in One-Dimensional Quasi-Phase-Matched Nonlinear Crystals Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-01-01 Yuxin Guo, Xiaoxi Xu, Zhaopin Chen, Yangui Zhou, Bin Liu, Hexiang He, Yongyao Li, Jianing Xie
A quasi-phase-matched technique is introduced for soliton transmission in a quadratic [χ (2)] nonlinear crystal to realize the stable transmission of dipole solitons in a one-dimensional space under three-wave mixing. We report four types of solitons as dipole solitons with distances between their bimodal peaks that can be laid out in different stripes. We study three cases of these solitons: spaced
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A Composite Ansatz for Calculation of Dynamical Structure Factor Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-01-01 Yupei Zhang, Chongjie Mo, Ping Zhang, Wei Kang
We propose an ansatz without adjustable parameters for the calculation of a dynamical structure factor. The ansatz combines the quasi-particle Green’s function, especially the contribution from the renormalization factor, and the exchange-correlation kernel from time-dependent density functional theory together, verified for typical metals and semiconductors from a plasmon excitation regime to the
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Predicted Critical State Based on Invariance of the Lyapunov Exponent in Dual Spaces Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-01-01 Tong Liu, Xu Xia
Critical states in disordered systems, fascinating and subtle eigenstates, have attracted a lot of research interests. However, the nature of critical states is difficult to describe quantitatively, and in general, it cannot predict a system that hosts the critical state. We propose an explicit criterion whereby the Lyapunov exponent of the critical state should be 0 simultaneously in dual spaces,
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Experimentally Ruling Out Joint Reality Based on Locality with Device-Independent Steering Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-01-01 Shuaining Zhang, Xiang Zhang, Zhiyue Zheng, Wei Zhang
As an essential concept to understand the world, whether the real values (or physical realities) of observables are suitable to physical systems beyond the classic has been debated for many decades. Although standard no-go results based on Bell inequalities have ruled out the joint reality of incompatible quantum observables, the possibility of giving simple yet strong arguments to rule out joint reality
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Modulation of High-Order Harmonic Generation from a Monolayer ZnO by Co-rotating Two-Color Circularly Polarized Laser Fields Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-01-01 Yue Qiao, Jiaqi Chen, Shushan Zhou, Jigen Chen, Shicheng Jiang, Yujun Yang
By numerically solving the two-dimensional semiconductor Bloch equation, we study the high-order harmonic emission of a monolayer ZnO under the driving of co-rotating two-color circularly polarized laser pulses. By changing the relative phase between the fundamental frequency field and the second one, it is found that the harmonic intensity in the platform region can be significantly modulated. In
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Real-Time Observation of Instantaneous ac Stark Shift of a Vacuum Using a Zeptosecond Laser Pulse Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-01-01 Dandan Su, Miao Jiang
Based on the numerical solution of the time-dependent Dirac equation, we propose a method to observe in real time the ac Stark shift of a vacuum driven by an ultra-intense laser field. By overlapping the ultra-intense pump pulse with another zeptosecond probe pulse whose photon energy is smaller than 2mc 2, electron–positron pair creation can be controlled by tuning the time delay between the pump
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Optical Nonlinearity of Violet Phosphorus and Applications in Fiber Lasers Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-01-01 Hui-ran Yang, Meng-ting Qi, Xu-peng Li, Ze Xue, Chen-hao Lu, Jia-wei Cheng, Dong-dong Han, Lu Li
A D-shaped fiber is coated with a new two-dimensional nanomaterial, violet phosphorus (VP), to create a saturable absorber (SA) with a modulation depth of 3.68%. Subsequently, the SA is inserted into a fiber laser, enabling successful generation of dark solitons and bright–dark soliton pairs through adjustment of the polarization state within the cavity. Through further study, mode-locked pulses are
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High-Temperature Superconductivity in La3Ni2O7 Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-01-01 Kun Jiang, Ziqiang Wang, Fu-Chun Zhang
Motivated by the recent discovery of high-temperature superconductivity in bilayer La3Ni2O7 under pressure, we study its electronic properties and superconductivity due to strong electron correlation. Using the inversion symmetry, we decouple the low-energy electronic structure into block-diagonal symmetric and antisymmetric sectors. It is found that the antisymmetric sector can be reduced to a one-band
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Acoustic Bilayer Gradient Metasurfaces for Perfect and Asymmetric Beam Splitting Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-01-01 Jiaqi Quan, Baoyin Sun, Yangyang Fu, Lei Gao, Yadong Xu
We experimentally and theoretically present a paradigm for the accurate bilayer design of gradient metasurfaces for wave beam manipulation, producing an extremely asymmetric splitting effect by simply tailoring the interlayer size. This concept arises from anomalous diffraction in phase gradient metasurfaces and the precise combination of the phase gradient in bilayer metasurfaces. Ensured by different
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Phonon Thermal Transport at Interfaces of a Graphene/Vertically Aligned Carbon Nanotubes/Hexagonal Boron Nitride Sandwiched Heterostructure Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-01-01 Menglin Li, Muhammad Asif Shakoori, Ruipeng Wang, Haipeng Li
Molecular dynamics simulation is used to calculate the interfacial thermal resistance of a graphene/carbon nanotubes/hexagonal boron nitride (Gr/CNTs/hBN) sandwiched heterostructure, in which vertically aligned carbon nanotube (VACNT) arrays are covalently bonded to graphene and hexagonal boron nitride layers. We find that the interfacial thermal resistance (ITR) of the Gr/VACNT/hBN sandwiched heterostructure
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Twin-Capture Rydberg State Excitation Enhanced with Few-Cycle Laser Pulses Chin. Phys. Lett. (IF 3.5) Pub Date : 2024-01-01 Jing Zhao, Jinlei Liu, Xiaowei Wang, Zengxiu Zhao
Quantum excitation is usually regarded as a transient process occurring instantaneously, leaving the underlying physics shrouded in mystery. Recent research shows that Rydberg-state excitation with ultrashort laser pulses can be investigated and manipulated with state-of-the-art few-cycle pulses. We theoretically find that the efficiency of Rydberg state excitation can be enhanced with a short laser