Spin-Canting-Induced Band Reconstruction in the Dirac Material
- ETH Zurich (Switzerland)
- Max Planck Inst. for Chemical Physics of Solids, Dresden (Germany)
- Beijing National Laboratory for Condensed Matter Physics (China); Univ. of Chinese Academy of Sciences, Beijing (China)
- Brookhaven National Lab. (BNL), Upton, NY (United States); Chongqing Univ. (China)
- Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., NY (United States)
- Beijing National Laboratory for Condensed Matter Physics (China); Univ. of Chinese Academy of Sciences, Beijing (China); Songshan Lake Materials Laboratory, Dongguan, GD (China)
- Beijing National Laboratory for Condensed Matter Physics (China); Univ. of Chinese Academy of Sciences, Beijing (China); South Bay Interdisciplinary Science Center, Dongguan, GD (China)
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.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC0012704
- OSTI ID:
- 1633595
- Alternate ID(s):
- OSTI ID: 1607796
- Report Number(s):
- BNL-216026-2020-JAAM; PRLTAO; TRN: US2201208
- Journal Information:
- Physical Review Letters, Vol. 124, Issue 13; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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