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Title: Magnetotransport study of Dirac fermions in YbMnBi 2 antiferromagnet

Journal Article · · Physical Review B
 [1];  [1];  [2];  [1];  [3];  [4];  [1];  [1];  [1];  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States); Chinese Academy of Sciences, Shenyang (China)
  3. Florida State Univ., Tallahassee, FL (United States)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

We report quantum transport and Dirac fermions in YbMnBi2 single crystals. YbMnBi2 is a layered material with anisotropic conductivity and magnetic order below 290 K. Magnetotransport properties, nonzero Berry phase, and small cyclotron mass indicate the presence of Dirac fermions. Lastly, angular-dependent magnetoresistance indicates a possible quasi-two-dimensional Fermi surface, whereas the deviation from the nontrivial Berry phase expected for Dirac states suggests the contribution of parabolic bands at the Fermi level or spin-orbit coupling.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC00112704; SC0012704
OSTI ID:
1345734
Alternate ID(s):
OSTI ID: 1329949
Report Number(s):
BNL-113552-2017-JA; PRBMDO; R&D Project: PM016; PO010; KC0201050; KC0201060; TRN: US1701513
Journal Information:
Physical Review B, Vol. 94, Issue 16; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 68 works
Citation information provided by
Web of Science

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Cited By (16)

A magnetic topological semimetal Sr1−yMn1−zSb2 (y, z < 0.1) journal July 2017
Time-reversal symmetry breaking type-II Weyl state in YbMnBi2 journal July 2019
Prediction of Weyl semimetal and antiferromagnetic topological insulator phases in Bi2MnSe4 journal March 2019
Possible Weyl fermions in the magnetic Kondo system CeSb journal July 2017
Topological antiferromagnetic spintronics journal March 2018
Magneto-transport properties of proposed triply degenerate topological semimetal Pd 3 Bi 2 S 2 journal April 2018
Magnetic structure and excitations of the topological semimetal YbMnBi 2 journal October 2019
Signatures of coupling between spin waves and Dirac fermions in YbMnBi 2 journal January 2020
Electrodynamic response of the type-II Weyl semimetal YbMnBi 2 journal December 2016
Group-theoretical classification of multipole order: Emergent responses and candidate materials journal December 2018
High mobility in a van der Waals layered antiferromagnetic metal journal February 2020
Time-reversal symmetry breaking type-II Weyl state in $YbMnBi_{2}$ text January 2019
Electrodynamic response of type II Weyl semimetals text January 2016
Possible Weyl fermions in the magnetic Kondo system CeSb text January 2016
Weyl and Dirac Semimetals in Three Dimensional Solids text January 2017
Magneto-transport properties of proposed triply degenerate topological semimetal Pd$_{3}$Bi$_{2}$S$_{2}$ text January 2018

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