Tuning of spin-orbit coupling in chiral molecule-incorporated two-dimensional organic-inorganic hybrid perovskite copper halides with ferromagnetic exchange interactions

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Tuning of spin-orbit coupling in chiral molecule-incorporated two-dimensional organic-inorganic hybrid perovskite copper halides with ferromagnetic exchange interactions

Kouji Taniguchi, Po-Jung Huang, Hajime Sagayama, Ryoji Kiyanagi, Kazuki Ohishi, Shunsuke Kitou, Yuiga Nakamura, and Hitoshi Miyasaka

Phys. Rev. Materials 8, 024409 – Published 23 February 2024

Abstract

Leveraging the flexible material designability of organic-inorganic hybrid systems, spatial inversion symmetry breaking and spin-orbit coupling (SOC) were simultaneously controlled in a series of two-dimensional organic-inorganic hybrid perovskite (2D-OIHP) copper halides with ferromagnetic exchange interaction (FMI). In chiral molecule-incorporated 2D-OIHP copper halides, an increase in Br component over Cl component at halogen sites leads to systematic variations in magnetic phase diagrams owing to the competition between the FMI and Dzyaloshinskii-Moriya interaction induced by the SOC. The crucial role of noncentrosymmetry in the competition for the magnetic interactions was confirmed by comparing the magnetic phase diagrams of chiral and achiral 2D-OIHP copper bromides.

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Received 26 September 2023
Revised 20 December 2023
Accepted 17 January 2024

DOI:https://doi.org/10.1103/PhysRevMaterials.8.024409

Physics Subject Headings (PhySH)

Dzyaloshinskii-Moriya interaction Ferromagnetism Magnetic order Spin-orbit coupling

Chiral magnets

AC susceptibility measurements Crystal growth Magnetization measurements X-ray diffraction

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Kouji Taniguchi ^1,2,*, Po-Jung Huang¹, Hajime Sagayama³, Ryoji Kiyanagi ⁴, Kazuki Ohishi ⁵, Shunsuke Kitou^6,†, Yuiga Nakamura⁷, and Hitoshi Miyasaka^8,9

¹Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan
²PRESTO, Japan Science and Technology Agency (JST), 5-3 Yonbancho, Chiyoda-ku, Tokyo 102-8666, Japan
³Institute of Materials Structure Science, High Energy Accelerator Research Organization, Tsukuba 305-0801, Japan
⁴J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
⁵Neutron Science and Technology Center, Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki 319-1106, Japan
⁶RIKEN Center for Emergent Matter Science, Wako 351–0198, Japan
⁷Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, Hyogo 679-5198, Japan
⁸Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
⁹Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-8578, Japan

^*taniguchi.k.ap@m.titech.ac.jp
^†Present address: Department of Advanced Materials Science, The University of Tokyo, Kashiwa 277-8561, Japan.

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Issue

Vol. 8, Iss. 2 — February 2024

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