Spin-constrained optoelectronic functionality in two-dimensional ferromagnetic semiconductor heterojunctions.
Mater Horiz
; 8(4): 1323-1333, 2021 Apr 01.
Article
en En
| MEDLINE
| ID: mdl-34821925
ABSTRACT
Two-dimensional (2D) van der Waals (vdW) engineering has brought about many extraordinary and new physics concepts and potential applications. Herein, we propose a new type of spin-constrained optoelectronic device developed using 2D ferromagnetic semiconductor heterostructures (FMSs). It is based on a photoexcited double-band-edge transition model, involved coupling between the interlayer magnetic order and the spin-polarized band structure and can achieve the reversible switch of band alignment via reversal of magnetization. We demonstrate that such a unique magnetic optoelectronic device can be realized with a CrBr3/CrCl3 heterojunction and other 2D FMS heterojunctions that have the same direction as the easy magnetization axis and have a switchable band alignment that allows reconfiguration. This study opens a new application window for 2D vdW heterostructures and enables the possibility for fully vdW-based ultra-compact spintronics devices.
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01-internacional
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MEDLINE
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En
Revista:
Mater Horiz
Año:
2021
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Article