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

Abstract

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.

Authors:
 [1];  [1];  [2];  [1];  [1];  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. Florida State Univ., Tallahassee, FL (United States)
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1255727
Alternate Identifier(s):
OSTI ID: 1244167
Report Number(s):
BNL-112245-2016-JA
Journal ID: ISSN 2469-9950; PRBMDO; R&D Project: PM016; KC0201050
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 93; Journal Issue: 11; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Li, Lijun, Wang, Kefeng, Graf, D., Wang, Limin, Wang, Aifeng, and Petrovic, C. Electron-hole asymmetry, Dirac fermions, and quantum magnetoresistance in BaMnBi2. United States: N. p., 2016. Web. doi:10.1103/PhysRevB.93.115141.
Li, Lijun, Wang, Kefeng, Graf, D., Wang, Limin, Wang, Aifeng, & Petrovic, C. Electron-hole asymmetry, Dirac fermions, and quantum magnetoresistance in BaMnBi2. United States. https://doi.org/10.1103/PhysRevB.93.115141
Li, Lijun, Wang, Kefeng, Graf, D., Wang, Limin, Wang, Aifeng, and Petrovic, C. Mon . "Electron-hole asymmetry, Dirac fermions, and quantum magnetoresistance in BaMnBi2". United States. https://doi.org/10.1103/PhysRevB.93.115141. https://www.osti.gov/servlets/purl/1255727.
@article{osti_1255727,
title = {Electron-hole asymmetry, Dirac fermions, and quantum magnetoresistance in BaMnBi2},
author = {Li, Lijun and Wang, Kefeng and Graf, D. and Wang, Limin and Wang, Aifeng and Petrovic, C.},
abstractNote = {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.},
doi = {10.1103/PhysRevB.93.115141},
journal = {Physical Review B},
number = 11,
volume = 93,
place = {United States},
year = {Mon Mar 28 00:00:00 EDT 2016},
month = {Mon Mar 28 00:00:00 EDT 2016}
}

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Cited by: 55 works
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