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Comprehensive investigation of quantum oscillations in semimetal using an ac composite magnetoelectric technique with ultrahigh sensitivity
npj Quantum Materials ( IF 5.7 ) Pub Date : 2024-01-16 , DOI: 10.1038/s41535-024-00622-w
Long Zhang , Tianyang Wang , Yugang Zhang , Shuang Liu , Yuping Sun , Xiaoyuan Zhou , Young Sun , Mingquan He , Aifeng Wang , Xuan Luo , Yisheng Chai

Quantum oscillation (QO), a physical phenomenon that reflects the characteristics of the Fermi surface and transport fermions, has been extensively observed in metals and semimetals through various approaches, like magnetostriction, magnetization, resistivity, and thermoelectric power. However, only limited oscillation frequencies can be revealed by the aforementioned methods, particularly in semimetals with intricate Fermi pockets and associated magnetic breakdown phenomena. In this paper, we present the application of an ac composite magnetoelectric (ME) technique to measure the QOs of a topological nodal-line semimetal, ZrSiS, which possesses six fundamental QO frequencies. By employing the ME technique with a maximum magnetic field of 13 T and a minimum temperature of 2 K, we are able to capture all the fundamental frequencies and most of the permissible magnetic breakdown frequencies. Remarkably, a series of magnetic breakdown frequencies around 8000 T were revealed even in a magnetic field as low as 7.5 T. These findings highlight the ME technique as an ultrahigh-sensitive tool for studying Dirac Fermions and other topological semimetals with complex Fermi surfaces.



中文翻译:

利用超高灵敏度交流复合磁电技术全面研究半金属中的量子振荡

量子振荡(QO)是一种反映费米表面和输运费米子特征的物理现象,已通过磁致伸缩、磁化、电阻率和热电势等多种方法在金属和半金属中广泛观察到。然而,上述方法只能揭示有限的振荡频率,特别是在具有复杂费米口袋和相关磁击穿现象的半金属中。在本文中,我们提出了应用交流复合磁电(ME)技术来测量拓扑节点线半金属ZrSiS的QO,ZrSiS具有六个基本QO频率。通过采用最大磁场为 13 T、最低温度为 2 K 的 ME 技术,我们能够捕获所有基频和大部分允许的磁击穿频率。值得注意的是,即使在低至 7.5 T 的磁场中,也显示出一系列约 8000 T 的磁击穿频率。这些发现凸显了 ME 技术作为研究狄拉克费米子和其他具有复杂费米表面的拓扑半金属的超高灵敏度工具。

更新日期:2024-01-17
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