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

被引：64

作者：

Li, Lijun ^{[1
,3
]}

Wang, Kefeng ^{[1
,4
]}

Graf, D. ^{[2
]}

Wang, Limin ^{[1
,4
]}

Wang, Aifeng ^{[1
]}

Petrovic, C. ^{[1
]}

机构：

[1] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA

[2] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32306 USA

[3] Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China

[4] Univ Maryland, Dept Phys, College Pk, MD 20742 USA

来源：

PHYSICAL REVIEW B | 2016年 / 93卷 / 11期

关键词：

OSCILLATIONS; SRMNBI2;

D O I：

10.1103/PhysRevB.93.115141

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 cyclotronmass, 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.

引用

页数：5

共 40 条

[1] Quantum magnetoresistance
Abrikosov, AA
[J]. PHYSICAL REVIEW B, 1998, 58 (05): : 2788 - 2794
[2] Topological Insulator Materials
Ando, Yoichi
[J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2013, 82 (10)
[3] [Anonymous], 1988, Fundamentals of the Theory of Metals
[4] Blaha P., 2001, Calculating Cryst. Prop., V60
[5] The electronic properties of graphene
Castro Neto, A. H.
Guinea, F.
Peres, N. M. R.
Novoselov, K. S.
Geim, A. K.
[J]. REVIEWS OF MODERN PHYSICS, 2009, 81 (01) : 109 - 162
[6] Fermi pockets and quantum oscillations of the Hall coefficient in high-temperature superconductors
Chakravarty, Sudip
Kee, Hae-Young
[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2008, 105 (26) : 8835 - 8839
[7] CORDIER G, 1977, Z NATURFORSCH B, V32, P383
[8] Quantum oscillations and the Fermi surface in an underdoped high-Tc superconductor
Doiron-Leyraud, Nicolas
Proust, Cyril
LeBoeuf, David
Levallois, Julien
Bonnemaison, Jean-Baptiste
Liang, Ruixing
Bonn, D. A.
Hardy, W. N.
Taillefer, Louis
[J]. NATURE, 2007, 447 (7144) : 565 - 568
[9] Angular-dependent oscillations of the magnetoresistance in Bi2Se3 due to the three-dimensional bulk Fermi surface
Eto, Kazuma
Ren, Zhi
Taskin, A. A.
Segawa, Kouji
Ando, Yoichi
[J]. PHYSICAL REVIEW B, 2010, 81 (19):
[10] Strong Anisotropy of Dirac Cones in SrMnBi2 and CaMnBi2 Revealed by Angle-Resolved Photoemission Spectroscopy
Feng, Ya
Wang, Zhijun
Chen, Chaoyu
Shi, Youguo
Xie, Zhuojin
Yi, Hemian
Liang, Aiji
He, Shaolong
He, Junfeng
Peng, Yingying
Liu, Xu
Liu, Yan
Zhao, Lin
Liu, Guodong
Dong, Xiaoli
Zhang, Jun
Chen, Chuangtian
Xu, Zuyan
Dai, Xi
Fang, Zhong
Zhou, X. J.
[J]. SCIENTIFIC REPORTS, 2014, 4

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