Magnetic and charge instabilities in vanadium-based topological kagome metals
2022-10-15
发表期刊PHYSICAL REVIEW B (IF:3.2[JCR-2023],3.3[5-Year])
ISSN2469-9950
EISSN2469-9969
卷号106期号:15
发表状态已发表
DOI10.1103/PhysRevB.106.155125
摘要

Vanadium-based topological kagome metals AV3Sb5 (A=K, Rb, Cs) have drawn great attention recently due to the discoveries of charge order, nematic phase, time-reversal symmetry breaking, and superconductivity. In this work, we study the Fermi-surface instabilities of topological kagome metals AV3Sb5 (A=K, Rb, Cs) in all the charge-orbital-spin channels based on first principles calculations, and provide a first principles theory for the current-loop state in this class of materials. After comprehensive analysis of the interaction-renormalized generalized susceptibility tensor combined with unrestricted Hartree-Fock calculations, we find that the leading instability modes at the Fermi surface are three spin magnetic modes at Γ point, giving rise to ferromagnetism within the kagome plane with small magnetization on the V atoms. We further show that counter-propagating current loops within the kagome plane can be generated due to the interplay between spin magnetism and spin-orbit coupling, and the current pattern is consistent with recent muon spin spectroscopy measurements. Moreover, some other puzzling experiments in this system such as the giant anomalous Hall effect and nematicity can also be explained from our results. © 2022 American Physical Society.

关键词Calculations Fermi surface Ferromagnetism Topology Charge instabilities Charge-ordering Current loop Fermi-surface instability Magnetic instability Nematic phasis Orbitals Spin channels Symmetry breakings Time reversal symmetries
收录类别SCIE ; EI
语种英语
出版者American Physical Society
EI入藏号20224413024037
EI主题词Vanadium
EI分类号543.6 Vanadium and Alloys ; 701.2 Magnetism: Basic Concepts and Phenomena ; 708.4 Magnetic Materials ; 921 Mathematics ; 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory ; 931.3 Atomic and Molecular Physics
原始文献类型Journal article (JA)
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文献类型期刊论文
条目标识符https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/243553
专题物质科学与技术学院
物质科学与技术学院_公共科研平台_拓扑物理实验室
物质科学与技术学院_PI研究组_刘健鹏组
通讯作者Liu, Jianpeng
作者单位
1.School of Physical Science and Technology, ShanghaiTech University, Shanghai; 201210, China;
2.ShanghaiTech Laboratory for Topological Physics, ShanghaiTech University, Shanghai; 201210, China;
3.Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7), Department of Physics, Princeton University, Princeton; NJ; 08544, United States;
4.Princeton Institute for Science and Technology of Materials, Princeton University, Princeton; NJ; 08544, United States;
5.Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley; CA; 94720, United States
第一作者单位物质科学与技术学院;  上海科技大学
通讯作者单位物质科学与技术学院;  上海科技大学
第一作者的第一单位物质科学与技术学院
推荐引用方式
GB/T 7714
Ma, Hai-Yang,Yin, Jia-Xin,Zahid Hasan, M.,et al. Magnetic and charge instabilities in vanadium-based topological kagome metals[J]. PHYSICAL REVIEW B,2022,106(15).
APA Ma, Hai-Yang,Yin, Jia-Xin,Zahid Hasan, M.,&Liu, Jianpeng.(2022).Magnetic and charge instabilities in vanadium-based topological kagome metals.PHYSICAL REVIEW B,106(15).
MLA Ma, Hai-Yang,et al."Magnetic and charge instabilities in vanadium-based topological kagome metals".PHYSICAL REVIEW B 106.15(2022).
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