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PreprintCC BY 4.0arXiv

Spin separation of Dirac electrons by twisted and vector optical beams

  • A. A. Gunyaga
  • M. V. Durnev
  • S. A. Tarasenko
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Abstract

We demonstrate that twisted and vector optical beams can spatially separate two-dimensional electrons with opposite spin projections. Spin accumulation arises from diverging spin currents induced by structured light together with spin relaxation and diffusion. We derive analytical expressions for the resulting spin density in the quasi-local and diffusion-controlled regimes and numerically calculate the spin textures for the parameters relevant to transition metal dichalcogenide monolayers. Our results suggest a mechanism by which the twist and vector pattern of optical beams can be imprinted onto the electron spin degree of freedom.

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Cite

BibTeXRIS
BibTeX
@misc{gunyaga2026spin,
  title = {{Spin separation of Dirac electrons by twisted and vector optical beams}},
  author = {A. A. Gunyaga and M. V. Durnev and S. A. Tarasenko},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.37010},
  eprint = {2609.37010},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.37010},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Spin separation of Dirac electrons by twisted and vector optical beams
AU  - A. A. Gunyaga
AU  - M. V. Durnev
AU  - S. A. Tarasenko
PY  - 2026
DA  - 2026/09/29
PB  - arXiv
DO  - 10.48550/arxiv.2609.37010
UR  - https://arxiv.org/abs/2609.37010
AB  - We demonstrate that twisted and vector optical beams can spatially separate two-dimensional electrons with opposite spin projections. Spin accumulation arises from diverging spin currents induced by structured light together with spin relaxation and diffusion. We derive analytical expressions for the resulting spin density in the quasi-local and diffusion-controlled regimes and numerically calculate the spin textures for the parameters relevant to transition metal dichalcogenide monolayers. Our results suggest a mechanism by which the twist and vector pattern of optical beams can be imprinted onto the electron spin degree of freedom.
ER  -