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|Paper IPM / Physic / 13488||
We propose a valley- and spin-filter based on a normal/ferromagnetic/normal molybdenum disulfide (MoS2) junction, where the polarizations of the valley and the spin can be inverted by reversing the direction of the exchange field in the ferromagnetic region. The polarizations are also tunable by application of a gate voltage to the structure and changing the exchange field. We further demonstrate that the presence of a topological term (β) in the Hamiltonian can enhance or reduce the charge conductance, depending on the value of the exchange field, and reduces the small polarizations.
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