Magnetic field dependence of edge states in MoS₂ quantum dots

2017/09/27 by Carlos Segarra, Josep Planelles, Segarra, Carlos +3
Engineering · Materials Science · Physics and Astronomy · #FOS: Physical sciences #Graphene research and applications #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Molecular Junctions and Nanostructures #Quantum and electron transport phenomena #cond-mat.mes-hall

paper · pdf · doi:10.48550/arxiv.1709.09457

submitted as extension to Chapter 17 of "Physics of Quantum Rings" (Springer, ed.V. Fomin), 2nd edition

arxiv created 2017/09/27 · openalex publication_date 2017/09/27 · arxiv updated 2017/09/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We study the electronic structure of monolayer MoS₂ quantum dots subject to a perpendicular magnetic field. The coupling between conduction and valence band gives rise to mid-gap topological states which localize near the dot edge. These edge states are analogous to those of 1D quantum rings. We show they present a large, Zeeman-like, linear splitting with the magnetic field, anticross with the delocalized Fock-Darwin-like states of the dot, give rise to Aharonov-Bohm-like oscillations of the conduction (valence) band low-lying states in the K (K') valley, and modify the strong field Landau levels limit form of the energy spectrum.

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