Robust kagome electronic structure in the topological quantum magnets XMn6Sn6 (X = Dy, Tb, Gd, Y)

被引：25

作者：

Gu, X. ^{[1
]}

Chen, C. ^{[2
,3
,4
,5
]}

Wei, W. S. ^{[6
]}

Gao, L. L. ^{[2
,3
]}

Liu, J. Y. ^{[7
]}

Du, X. ^{[1
,7
]}

Pei, D.

Zhou, J. S. ^{[1
]}

Xu, R. Z. ^{[1
]}

Yin, Z. X. ^{[1
]}

Zhao, W. X. ^{[1
]}

Li, Y. D. ^{[1
]}

Jozwiak, C. ^{[5
]}

Bostwick, A. ^{[5
]}

Rotenberg, E. ^{[5
]}

Backes, D. ^{[8
]}

Veiga, L. S. I. ^{[8
]}

Dhesi, S. ^{[8
]}

Hesjedal, T. ^{[8
]}

van der Laan, G. ^{[8
]}

Du, H. F. ^{[6
]}

Jiang, W. J. ^{[1
,9
]}

Qi, Y. P. ^{[2
,3
,4
,10
]}

Li, G. ^{[2
,3
,4
]}

Shi, W. J. ^{[11
,12
]}

Liu, Z. K. ^{[2
,3
,4
]}

Chen, Y. L. ^{[1
,2
,3
,4
,7
]}

Yang, L. X. ^{[1
,9
]}

机构：

[1] Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China

[2] ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China

[3] CAS Shanghai Sci Res Ctr, Shanghai 201210, Peoples R China

[4] ShanghaiTech Lab Topol Phys, Shanghai 200031, Peoples R China

[5] Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA

[6] Chinese Acad Sci, Anhui Prov Key Lab Condensed Matter Phys Extreme, High Field Magnet Lab, Hefei 230026, Peoples R China

[7] Univ Oxford, Dept Phys, Clarendon Lab, Parks Rd, Oxford OX1 3PU, England

[8] Diamond Light Source, Harwell Sci & Innovat Campus, Didcot OX11 0DE, Oxon, England

[9] Frontier Sci Ctr Quantum Informat, Beijing 100084, Peoples R China

[10] Shanghai Tech Univ, Shanghai Key Lab High Resolut Electron Microscopy, Shanghai 201210, Peoples R China

[11] ShanghaiTech Univ, Ctr Transformat Sci, Shanghai 201210, Peoples R China

[12] ShanghaiTech Univ, Shanghai High Repetit Rate XFEL & Extreme Light, Shanghai 201210, Peoples R China

来源：

PHYSICAL REVIEW B | 2022年 / 105卷 / 15期

基金：

英国工程与自然科学研究理事会; 国家重点研发计划; 中国国家自然科学基金;

关键词：

TOTAL-ENERGY CALCULATIONS; DIRAC FERMIONS; STATE; LATTICE;

D O I：

10.1103/PhysRevB.105.155108

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Crystal geometry can greatly influence the emergent properties of quantum materials. As an example, the kagome lattice is an ideal platform to study the rich interplay between topology, magnetism, and electronic correlation. In this work, combining high-resolution angle-resolved photoemission spectroscopy and ab initio calculation, we systematically investigate the electronic structure of XMn6Sn6 (X = Dy, Tb, Gd, Y) family compounds. We observe the Dirac fermion and the flat band arising from the magnetic kagome lattice of Mn atoms. Interestingly, the flat band locates in the same energy region in all compounds studied, regardless of their different magnetic ground states and 4 f electronic configurations. These observations suggest a robust Mn magnetic kagome lattice across the XMn6Sn6 family, thus providing an ideal platform for the search for, and investigation of, new emergent phenomena in magnetic topological materials.

引用

页数：6

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