Spin-valley filtering induced by resonant states in silicene

We studied the spin and valley transport of silicene through a resonant-tunneling structure with electric field and magnetic field. It is demonstrated that a perfect spin-valley filtering effect can be obtained, where both spin and valley indices are polarized simultaneously. The spin-valley filteri...

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Veröffentlicht in:The European physical journal. B, Condensed matter physics Condensed matter physics, 2022-10, Vol.95 (10), Article 176
Hauptverfasser: Li, Wen, Lu, Wei-Tao, Li, Kai-Cai
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Lu, Wei-Tao
Li, Kai-Cai
description We studied the spin and valley transport of silicene through a resonant-tunneling structure with electric field and magnetic field. It is demonstrated that a perfect spin-valley filtering effect can be obtained, where both spin and valley indices are polarized simultaneously. The spin-valley filtering benefits from the break of spatial invariance and the form of spin-valley-polarized resonant states. A high spin-valley-polarized conductance can be realized at certain values of the electric field. Furthermore, the resonant-tunneling structure composed of electric field and potential field is also feasible to fully filter spin-valley electrons, implying an electrically controlled spin-valley filter. Graphical abstract
doi_str_mv 10.1140/epjb/s10051-022-00442-6
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subjects Complex Systems
Condensed Matter Physics
Electric fields
Electron spin
Filtration
Fluid- and Aerodynamics
Magnetic fields
Physics
Physics and Astronomy
Potential fields
Regular Article - Solid State and Materials
Silicene
Solid State Physics
Valleys
title Spin-valley filtering induced by resonant states in silicene
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