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Title: Spin-Canting-Induced Band Reconstruction in the Dirac Material Ca 1 x Na x MnBi 2

Abstract

The ternary AMnBi2 (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. We report on a comprehensive study of the optical properties and magnetic torque response of Ca1–xNaxMnBi2. Our findings give evidence for a spin canting occurring at Ts~50–100 K. Thus, 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 Ts.

Authors:
 [1];  [1];  [2];  [3];  [4]; ORCiD logo [5];  [5]; ORCiD logo [6];  [7]; ORCiD logo [1]
  1. ETH Zurich (Switzerland)
  2. Max Planck Inst. for Chemical Physics of Solids, Dresden (Germany)
  3. Beijing National Laboratory for Condensed Matter Physics (China); Univ. of Chinese Academy of Sciences, Beijing (China)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States); Chongqing Univ. (China)
  5. Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., NY (United States)
  6. Beijing National Laboratory for Condensed Matter Physics (China); Univ. of Chinese Academy of Sciences, Beijing (China); Songshan Lake Materials Laboratory, Dongguan, GD (China)
  7. Beijing National Laboratory for Condensed Matter Physics (China); Univ. of Chinese Academy of Sciences, Beijing (China); South Bay Interdisciplinary Science Center, Dongguan, GD (China)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1633595
Alternate Identifier(s):
OSTI ID: 1607796
Report Number(s):
BNL-216026-2020-JAAM
Journal ID: ISSN 0031-9007; PRLTAO
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 124; Journal Issue: 13; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Density of states; first-principles calculations; magnetic coupling; spin torque; topological materials; magnetic techniques; optical spectroscopy

Citation Formats

Yang, R., Corasaniti, M., Le, C. C., Liao, Z. Y., Wang, A. F., Du, Q., Petrovic, C., Qiu, X. G., Hu, J. P., and Degiorgi, L.. Spin-Canting-Induced Band Reconstruction in the Dirac Material Ca1–xNaxMnBi2. United States: N. p., 2020. Web. https://doi.org/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.. Spin-Canting-Induced Band Reconstruction in the Dirac Material Ca1–xNaxMnBi2. United States. https://doi.org/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., and Degiorgi, L.. Mon . "Spin-Canting-Induced Band Reconstruction in the Dirac Material Ca1–xNaxMnBi2". United States. https://doi.org/10.1103/PhysRevLett.124.137201. https://www.osti.gov/servlets/purl/1633595.
@article{osti_1633595,
title = {Spin-Canting-Induced Band Reconstruction in the Dirac Material Ca1–xNaxMnBi2},
author = {Yang, R. and Corasaniti, M. and Le, C. C. and Liao, Z. Y. and Wang, A. F. and Du, Q. and Petrovic, C. and Qiu, X. G. and Hu, J. P. and Degiorgi, L.},
abstractNote = {The ternary AMnBi2 (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. We report on a comprehensive study of the optical properties and magnetic torque response of Ca1–xNaxMnBi2. Our findings give evidence for a spin canting occurring at Ts~50–100 K. Thus, 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 Ts.},
doi = {10.1103/PhysRevLett.124.137201},
journal = {Physical Review Letters},
number = 13,
volume = 124,
place = {United States},
year = {2020},
month = {3}
}

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