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Title: Absence of Dirac states in BaZnBi 2 induced by spin-orbit coupling

We report magnetotransport properties of BaZnBi 2 single crystals. Whereas electronic structure features Dirac states, such states are removed from the Fermi level by spin-orbit coupling (SOC) and consequently electronic transport is dominated by the small hole and electron pockets. Our results are consistent with not only three-dimensional, but also with quasi-two-dimensional portions of the Fermi surface. The SOC-induced gap in Dirac states is much larger when compared to isostructural SrMnBi 2. This suggests that not only long-range magnetic order, but also mass of the alkaline-earth atoms A in ABX 2 ( A = alkaline-earth, B = transition-metal, and X = Bi/Sb) are important for the presence of low-energy states obeying the relativistic Dirac equation at the Fermi surface.
Authors:
 [1] ;  [2] ;  [3] ;  [2] ;  [4] ;  [2] ;  [2]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States); Chinese Academy of Sciences (CAS), Shenyang (China)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Florida State Univ., Tallahassee, FL (United States). National High Magnetic Field Lab. (MagLab)
  4. Chinese Academy of Sciences (CAS), Shenyang (China)
Publication Date:
Report Number(s):
BNL-203215-2018-JAAM
Journal ID: ISSN 2469-9950; PRBMDO; TRN: US1802030
Grant/Contract Number:
SC0012704
Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 97; Journal Issue: 3; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
OSTI Identifier:
1425072
Alternate Identifier(s):
OSTI ID: 1417697

Ren, Weijun, Wang, Aifeng, Graf, D., Liu, Yu, Zhang, Zhidong, Yin, Wei-Guo, and Petrovic, C.. Absence of Dirac states in BaZnBi2 induced by spin-orbit coupling. United States: N. p., Web. doi:10.1103/PhysRevB.97.035147.
Ren, Weijun, Wang, Aifeng, Graf, D., Liu, Yu, Zhang, Zhidong, Yin, Wei-Guo, & Petrovic, C.. Absence of Dirac states in BaZnBi2 induced by spin-orbit coupling. United States. doi:10.1103/PhysRevB.97.035147.
Ren, Weijun, Wang, Aifeng, Graf, D., Liu, Yu, Zhang, Zhidong, Yin, Wei-Guo, and Petrovic, C.. 2018. "Absence of Dirac states in BaZnBi2 induced by spin-orbit coupling". United States. doi:10.1103/PhysRevB.97.035147.
@article{osti_1425072,
title = {Absence of Dirac states in BaZnBi2 induced by spin-orbit coupling},
author = {Ren, Weijun and Wang, Aifeng and Graf, D. and Liu, Yu and Zhang, Zhidong and Yin, Wei-Guo and Petrovic, C.},
abstractNote = {We report magnetotransport properties of BaZnBi2 single crystals. Whereas electronic structure features Dirac states, such states are removed from the Fermi level by spin-orbit coupling (SOC) and consequently electronic transport is dominated by the small hole and electron pockets. Our results are consistent with not only three-dimensional, but also with quasi-two-dimensional portions of the Fermi surface. The SOC-induced gap in Dirac states is much larger when compared to isostructural SrMnBi2. This suggests that not only long-range magnetic order, but also mass of the alkaline-earth atoms A in ABX2 ( A = alkaline-earth, B = transition-metal, and X = Bi/Sb) are important for the presence of low-energy states obeying the relativistic Dirac equation at the Fermi surface.},
doi = {10.1103/PhysRevB.97.035147},
journal = {Physical Review B},
number = 3,
volume = 97,
place = {United States},
year = {2018},
month = {1}
}