Magnetotransport study of Dirac fermions inYbMnBi2antiferromagnet | Zendy

Aifeng Wang | Zendy; Igor Zaliznyak | Zendy; Weijun Ren | Zendy; Lijun Wu | Zendy; David Graf | Zendy; V. Ovidiu Garlea | Zendy; J. B. Warren | Zendy; Emil S. Božin | Zendy; Yimei Zhu | Zendy; C. Petrović | Zendy

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Magnetotransport study of Dirac fermions inYbMnBi2antiferromagnet

Author(s) -

Aifeng Wang,

Igor Zaliznyak,

Weijun Ren,

Lijun Wu,

David Graf,

V. Ovidiu Garlea,

J. B. Warren,

Emil S. Božin,

Yimei Zhu,

C. Petrović

Publication year - 2016

Publication title -

physical review. b./physical review. b

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.78

H-Index - 465

eISSN - 2469-9969

pISSN - 2469-9950

DOI - 10.1103/physrevb.94.165161

Subject(s) - magnetoresistance , condensed matter physics , fermion , physics , dirac fermion , dirac (video compression format) , geometric phase , anisotropy , phase (matter) , coupling (piping) , quantum mechanics , materials science , magnetic field , neutrino , metallurgy

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.

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