Berry curvature and symmetry broken induced Hall effect in MoS2
Michael Zhang, Gerry West
TL;DR
This paper analyzes the quantum Hall effect in MoS2 caused by Berry curvature, focusing on how symmetry breaking and spin-orbit coupling induce valley and spin Hall effects, with theoretical expressions and calculations.
Contribution
It provides a theoretical analysis of Berry curvature-induced quantum Hall effects in MoS2, highlighting the role of symmetry breaking and spin-orbit coupling.
Findings
Berry curvature leads to quantum Hall effect in MoS2
Valley and spin Hall effects are derived from symmetry considerations
Expressions and rough calculations for these effects are presented
Abstract
Inversion symmetry breaking and spin-orbit coupling lead to valley and spin Hall effect in MoS2. Because of the large valley separation in momentum space, the valley index is expected to be robust. In this paper, quantum Hall effect in MoS2 originated from Berry curvature is analyzed after review of symmetry structure and spin-orbit coupling Hamiltonian of MoS2. Finally an expression and rough calculation is given for valley and spin Hall effect.
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Taxonomy
Topics2D Materials and Applications