Abstract
Abstract We investigate the tunneling time of massive Dirac electrons through an electric barrier in a ferromagnetic quantum structure consisting of normal/ferromagnetic/ normal MoS 2 parts. The results show that the dwell time is not only spin-separated but also valley-separated due to the spin-valley coupling of valence-band edges together with the exchange field. When the electric barrier broadens, the spin-dependent and valley-dependent dwell times increase with oscillating behavior. These behaviors are different from the massless Dirac electrons in graphene. Moreover, both the spin- and valley-dependent dwell times can be effectively modulated by the angle of incidence, the width, and the height of the electric barrier.
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