Perfect spin-valley polarization and magnetoresistance in MoS 2 tunnel junction with circularly polarized light

Perfect spin-valley polarization and magnetoresistance in MoS 2 tunnel junction with circularly polarized light

We study the spin-valley-dependent transport and magnetoresistance (MR) effect in a ferromagnetic MoS 2 junction modulated by the off-resonance circularly polarized light (CPL). It is found that the conductance could be 100% spin- and valley-polarized simultaneously in the P configuration. Perfect v...

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Veröffentlicht in:Japanese Journal of Applied Physics 2022-08, Vol.61 (8), p.80904
Hauptverfasser: Zhao, Chunli, Ou, Jiyang, Lu, Weitao, Wen, Zhenying
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container_title Japanese Journal of Applied Physics
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creator Zhao, Chunli
Ou, Jiyang
Lu, Weitao
Wen, Zhenying
description We study the spin-valley-dependent transport and magnetoresistance (MR) effect in a ferromagnetic MoS 2 junction modulated by the off-resonance circularly polarized light (CPL). It is found that the conductance could be 100% spin- and valley-polarized simultaneously in the P configuration. Perfect valley polarization can also be realized in the AP configuration. The spin polarization presents an oscillating behavior in AP configuration due to the spin–orbit coupling. Furthermore, the junction achieves a high magnetoresistance that can be controlled by the exchange field and the light.
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title Perfect spin-valley polarization and magnetoresistance in MoS 2 tunnel junction with circularly polarized light
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