Magnetotransport in Layered Dirac Fermion System Coupled with Magnetic Moments

Abstract

We theoretically investigate the magnetotransport of Dirac fermions coupled with localized moments to understand the physical properties of the Dirac material EuMnBi${}_2$. Using an interlayer hopping form, which simplifies the complicated interaction between the layers of Dirac fermions and the layers of magnetic moments in EuMnBi${}_2$, the theory reproduces most of the features observed in this system. The hysteresis observed in EuMnBi${}_2$ can be caused by the valley splitting that is induced by the spin-orbit coupling and the external magnetic field with the molecular field created by localized moments. Our theory suggests that the magnetotransport in EuMnBi${}_2$ is due to the interplay among Dirac fermions, localized moments, and spin-orbit coupling.

arXiv comment5 pages, 4 figures

References in corpus (10)

• The electronic properties of graphene
• Two-Dimensional Gas of Massless Dirac Fermions in Graphene
• Topological Insulators
• Topological insulators and superconductors
• Experimental Observation of Quantum Hall Effect and Berry's Phase in Graphene
• Spintronics: Fundamentals and applications
• Anisotropic Dirac fermions in a Bi square net of SrMnBi2
• Quantum Hall effect in a bulk antiferromagnet EuMnBi${}_2$ with magnetically confined two-dimensional Dirac fermions
• Anisotropic Dirac electronic structures of AMnBi${}_2$ (A=Sr, Ca)
• Effect of Eu magnetism on the electronic properties of the candidate Dirac material EuMnBi2

Cited by in corpus (2)

• Observation of Magnetopiezoelectric Effect in Antiferromagnetic Metal EuMnBi2
• Magnetic structures, spin-flop transition and coupling of Eu and Mn magnetism in the Dirac semimetal EuMnBi${}_2$