Magnetic field dependence of electronic properties of MoS quantum dots with different edges
arXiv:1802.09584 · doi:10.1103/PhysRevB.97.085437
Abstract
Using the tight-binding approach, we investigate the energy spectrum of square, triangular and hexagonal MoS quantum dots (QDs) in the presence of a perpendicular magnetic field. Novel edge states emerge in MoS QDs, which are distributed over the whole edge which we call ring states. The ring states are robust in the presence of spin-orbit coupling (SOC). The corresponding energy levels of the ring states oscillate as function of the perpendicular magnetic field which are related to Aharonov-Bohm oscillations. Oscillations in the magnetic field dependence of the energy levels and the peaks in the magneto-optical spectrum emerge (disappear) as the ring states are formed (collapsed). The period and the amplitude of the oscillation decreases with the size of the MoS QDs.
arXiv comment11 pages, 9 figures, Accepted by Phys. Rev. B
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