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Title: Electron-hole asymmetry, Dirac fermions, and quantum magnetoresistance in BaMnBi2

Journal Article · · Physical Review B
 [1];  [1];  [2];  [1];  [1];  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. Florida State Univ., Tallahassee, FL (United States)

Here, we report two-dimensional quantum transport and Dirac fermions in BaMnBi2 single crystals. BaMnBi2 is a layered bad metal with highly anisotropic conductivity and magnetic order below 290 K. Magnetotransport properties, nonzero Berry phase, small cyclotron mass, and the first-principles band structure calculations indicate the presence of Dirac fermions in Bi square nets. Quantum oscillations in the Hall channel suggest the presence of both electron and hole pockets, whereas Dirac and parabolic states coexist at the Fermi level.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0012704
OSTI ID:
1255727
Alternate ID(s):
OSTI ID: 1244167
Report Number(s):
BNL-112245-2016-JA; PRBMDO; R&D Project: PM016; KC0201050
Journal Information:
Physical Review B, Vol. 93, Issue 11; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 55 works
Citation information provided by
Web of Science

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Cited By (9)

Anisotropic Dirac Fermions in BaMnBi2 and BaZnBi2 journal October 2018
Nearly massless Dirac fermions hosted by Sb square net in BaMnSb2 journal July 2016
Highly mobile carriers in a candidate of quasi-two-dimensional topological semimetal AuTe 2 Br journal October 2019
Nontrivial Berry phase in magnetic BaMnSb 2 semimetal journal May 2017
Large magnetoresistance and large magnetothermopower effect in the Dirac material EuMn 0.8 Sb 2 journal March 2019
Large linear magnetoresistance in a new Dirac material BaMnBi 2 journal September 2016
Magnetic structure and excitations of the topological semimetal YbMnBi 2 journal October 2019
Nontrivial Berry phase in magnetic BaMnSb2 semimetal text January 2017
Highly anisotropic interlayer magnetoresistance in ZrSiS nodal-line Dirac semimetal text January 2019

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