Pressure-Tuned Intrinsic Anomalous Hall Conductivity in Kagome Magnets RV6Sn6(R=Gd,Tb)

孔祥明 ¹陶咨成 ²张蕊 ³夏威 ²陈旭 ⁴裴翠颖 ⁵应天平 ⁴齐彦鹏 ⁶郭艳峰 ²杨小帆 ⁷李世燕⁸

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作者信息

1. State Key Laboratory of Surface Physics,Department of Physics,Fudan University,Shanghai 200438,China;Shanghai Research Center for Quantum Sciences,Shanghai 201315,China
2. School of Physical Science and Technology,ShanghaiTech University,Shanghai 201210,China;ShanghaiTech Laboratory for Topological Physics,Shanghai 201210,China
3. Northwest Institute for Non-Ferrous Metal Research,Xi'an 710016,China
4. Beijing National Laboratory for Condensed Matter Physics,and Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China
5. School of Physical Science and Technology,ShanghaiTech University,Shanghai 201210,China
6. School of Physical Science and Technology,ShanghaiTech University,Shanghai 201210,China;ShanghaiTech Laboratory for Topological Physics,Shanghai 201210,China;Shanghai Key Laboratory of High-resolution Electron Microscopy,Shanghai 201210,China
7. State Key Laboratory of Surface Physics,Department of Physics,Fudan University,Shanghai 200438,China;Northwest Institute for Non-Ferrous Metal Research,Xi'an 710016,China
8. State Key Laboratory of Surface Physics,Department of Physics,Fudan University,Shanghai 200438,China;Shanghai Research Center for Quantum Sciences,Shanghai 201315,China;Collaborative Innovation Center of Advanced Microstructures,Nanjing 210093,China
折叠

Abstract

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 the interplay between magnetic Gd/Tb layers and nonmagnetic V-based kagome sublattice.The pressure-tuned magnetic transition temperature Tm in both the compounds exhibit a turning point at the critical pressure Pc,accompanied with a sign reversal in anomalous Hall effect(AHE).The separation of intrinsic and extrinsic contributions using the Tian-Ye-Jin scaling model suggests that the intrinsic mechanism originating from the electronic Berry curvature holds the priority in the competition with extrinsic mechanism in AHE.The above-mentioned findings can be attributed to the combined effect of pressure-tuned band topology and magnetic interaction in segregated layers.Our results provide a practical route to design and manipulate the intrinsic AHE in magnetic topological materials.

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基金项目

国家重点研发计划(2022YFA1402203)

上海市科技计划重大项目(2019SHZDZX01)

国家重点研发计划(2023YFA1406100)

Double First-Class Initiative Fund of Shanghai Tech University()

国家自然科学基金(52272265)

National Science Basic Research Plan in the Shaanxi Province of China(2024JC-YBQN-0390)

open project from State Key Laboratory of Surface Physics and Department of Physics,Fudan University(KF2022-13)

国家自然科学基金(52302010)

出版年

2024

中国物理快报(英文版)

中国科学院物理研究所,中国物理学会

中国物理快报(英文版)

CSTPCDCSCDEI

影响因子：0.515

ISSN：0256-307X

参考文献量74

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