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Yang R, Corasaniti M, Le CC, et al. Spin-Canting-Induced Band Reconstruction in the Dirac Material Ca_{1-x}Na_{x}MnBi_{2}. Phys Rev Lett. 2020;124(13):137201doi: 10.1103/PhysRevLett.124.137201.
Yang, R., Corasaniti, M., Le, C. C., Liao, Z. Y., Wang, A. F., Du, Q., Petrovic, C., Qiu, X. G., Hu, J. P., & Degiorgi, L. (2020). Spin-Canting-Induced Band Reconstruction in the Dirac Material Ca_{1-x}Na_{x}MnBi_{2}. Physical review letters, 124(13), 137201. https://doi.org/10.1103/PhysRevLett.124.137201
Yang, R, et al. "Spin-Canting-Induced Band Reconstruction in the Dirac Material Ca_{1-x}Na_{x}MnBi_{2}." Physical review letters vol. 124,13 (2020): 137201. doi: https://doi.org/10.1103/PhysRevLett.124.137201
Yang R, Corasaniti M, Le CC, Liao ZY, Wang AF, Du Q, Petrovic C, Qiu XG, Hu JP, Degiorgi L. Spin-Canting-Induced Band Reconstruction in the Dirac Material Ca_{1-x}Na_{x}MnBi_{2}. Phys Rev Lett. 2020 Apr 03;124(13):137201. doi: 10.1103/PhysRevLett.124.137201. PMID: 32302196.
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Phys Rev Lett. 2020 Apr 03;124(13):137201. doi: 10.1103/PhysRevLett.124.137201.

Spin-Canting-Induced Band Reconstruction in the Dirac Material Ca_{1-x}Na_{x}MnBi_{2}.

Physical review letters

R Yang, M Corasaniti, C C Le, Z Y Liao, A F Wang, Q Du, C Petrovic, X G Qiu, J P Hu, L Degiorgi

Affiliations

  1. Laboratorium für Festkörperphysik, ETH-Zürich, 8093 Zürich, Switzerland.
  2. Max Planck Institute for Chemical Physics of Solids, Dresden 01187, Germany.
  3. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
  4. School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China.
  5. Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA.
  6. Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11790, USA.
  7. Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China.
  8. Kavli Institute for Theoretical Sciences and CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing 100190, China.
  9. South Bay Interdisciplinary Science Center, Dongguan, Guangdong Province 523808, China.

PMID: 32302196 DOI: 10.1103/PhysRevLett.124.137201

Abstract

The ternary AMnBi_{2} (A is alkaline as well as rare-earth atom) materials provide an arena for investigating the interplay between low-dimensional magnetism of the antiferromagnetic MnBi layers and the electronic states in the intercalated Bi layers, which harbor relativistic fermions. Here, we report on a comprehensive study of the optical properties and magnetic torque response of Ca_{1-x}Na_{x}MnBi_{2}. Our findings give evidence for a spin canting occurring at T_{s}∼50-100  K. With the support of first-principles calculations we establish a direct link between the spin canting and the reconstruction of the electronic band structure, having immediate implications for the spectral weight reshuffling in the optical response, signaling a partial gapping of the Fermi surface, and the dc transport properties below T_{s}.

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