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

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外文摘要：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.

作者：

孔祥明、陶咨成、张蕊、夏威、陈旭、裴翠颖、应天平、齐彦鹏、郭艳峰、杨小帆、李世燕

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作者单位：

State Key Laboratory of Surface Physics,Department of Physics,Fudan University,Shanghai 200438,China

Shanghai Research Center for Quantum Sciences,Shanghai 201315,China

School of Physical Science and Technology,ShanghaiTech University,Shanghai 201210,China

ShanghaiTech Laboratory for Topological Physics,Shanghai 201210,China

Northwest Institute for Non-Ferrous Metal Research,Xi'an 710016,China

Beijing National Laboratory for Condensed Matter Physics,and Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China

Shanghai Key Laboratory of High-resolution Electron Microscopy,Shanghai 201210,China

Collaborative Innovation Center of Advanced Microstructures,Nanjing 210093,China

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基金：

国家重点研发计划上海市科技计划重大项目国家重点研发计划Double First-Class Initiative Fund of Shanghai Tech University国家自然科学基金National Science Basic Research Plan in the Shaanxi Province of Chinaopen project from State Key Laboratory of Surface Physics and Department of Physics,Fudan University国家自然科学基金

项目编号：

2022YFA14022032019SHZDZX012023YFA1406100522722652024JC-YBQN-0390KF2022-1352302010

出版年：

2024

DOI：

10.1088/0256-307X/41/4/047503

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)

CSTPCDEI

影响因子：0.515

ISSN：0256-307X

年,卷(期)：2024.41(4)

参考文献量74