Enhanced room temperature valley polarization via spin selective charge transfer

Mircea Cotlet

doi:10.1117/12.3003415

9 March 2024 Enhanced room temperature valley polarization via spin selective charge transfer

Mircea Cotlet

Proceedings Volume PC12884, Ultrafast Phenomena and Nanophotonics XXVIII; PC1288403 (2024) https://doi.org/10.1117/12.3003415
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

We combine monolayer TMD with chiral lead halide perovskites to achieve enhanced valley polarization via chirality induced spin selective charge transfer and to demonstrate the utility of chiral perovskites as spin filters, preferentially injecting charges with one spin, depending on the handedness of the perovskite material. This elegant, yet simple way to control valley polarization does not require circularly polarized light, and can be realized at room temperature, without a need for cryogenic temperatures, usually implying expensive, bulky, complex setups. Achieving robust valley polarization in TMDs at room temperature is of great importance for practical applications of TMD based valleytronics devices in quantum information science and technology.

Conference Presentation

Citation Download Citation

Mircea Cotlet "Enhanced room temperature valley polarization via spin selective charge transfer", Proc. SPIE PC12884, Ultrafast Phenomena and Nanophotonics XXVIII, PC1288403 (9 March 2024); https://doi.org/10.1117/12.3003415

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