Rare Earth Engineering in RMn6Sn6 (R=GdTm, Lu) Topological Kagome Magnets

Wenlong Ma, Xitong Xu, Jia-Xin Yin, Hui Yang, Huibin Zhou, Zi-Jia Cheng, Yuqing Huang, Zhe Qu, Fa Wang, M. Zahid Hasan, and Shuang Jia
Phys. Rev. Lett. 126, 246602 – Published 16 June 2021
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Abstract

Exploration of the topological quantum materials with electron correlation is at the frontier of physics, as the strong interaction may give rise to new topological phases and transitions. Here we report that a family of kagome magnets RMn6Sn6 manifest the quantum transport properties analogical to those in the quantum-limit Chern magnet TbMn6Sn6. The topological transport in the family, including quantum oscillations with nontrivial Berry phase and large anomalous Hall effect arising from Berry curvature field, points to the existence of Chern gapped Dirac fermions. Our observation demonstrates a close relationship between rare-earth magnetism and topological electron structure, indicating the rare-earth elements can effectively engineer the Chern quantum phase in kagome magnets.

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  • Received 27 July 2020
  • Accepted 20 May 2021

DOI:https://doi.org/10.1103/PhysRevLett.126.246602

© 2021 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Wenlong Ma1,*, Xitong Xu1,2,*, Jia-Xin Yin3,*, Hui Yang1, Huibin Zhou1, Zi-Jia Cheng3, Yuqing Huang1, Zhe Qu2,4, Fa Wang1,5, M. Zahid Hasan3,6,†, and Shuang Jia1,5,7,8,‡

  • 1International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China
  • 2Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, HFIPS, Chinese Academy of Sciences, Hefei, Anhui 230031, China
  • 3Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7), Department of Physics, Princeton University, Princeton, New Jersey 08544, USA
  • 4CAS Key Laboratory of Photovoltaic and Energy Conservation Materials, Hefei Institutes of Physical Sciences, Chinese Academy of Sciences, Hefei, Anhui 230031, China
  • 5Collaborative Innovation Center of Quantum Matter, Beijing 100871, China
  • 6Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
  • 7CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing 100190, China
  • 8Beijing Academy of Quantum Information Sciences, West Building 3, No. 10 Xibeiwang East Road, Haidian District, Beijing 100193, China

  • *These authors contributed equally to this work.
  • mzhasan@princeton.edu
  • gwljiashuang@pku.edu.cn

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Issue

Vol. 126, Iss. 24 — 18 June 2021

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