Spin-orbit interactions, time-reversal symmetry, and spin selection
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arXiv
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866909564984623104 |
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| author | Aharony, Amnon Entin-Wohlman, Ora |
| author_facet | Aharony, Amnon Entin-Wohlman, Ora |
| contents | Spin selective transport is usually associated with spin-orbit interactions. However, these interactions are invariant under time-reversal symmetry, and the Onsager relations and Bardarson's theorem imply that such interactions cannot yield spin selectivity for transport through a junction between two electronic reservoirs. Here, we review several ways to overcome this restriction, using a Zeeman magnetic field, the Aharonov-Bohm phase, time-dependent electric fields that generate time-dependent spin-orbit interactions, time-dependent transients, more than two terminals, leakage, and more than one level per ion on the junction. Our considerations focus on the transport of noninteracting electrons at low temperatures. A possible connection with the phenomenon of chiral-induced spin selectivity (CISS) is pointed out in one of the systems considered. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2504_03261 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Spin-orbit interactions, time-reversal symmetry, and spin selection Aharony, Amnon Entin-Wohlman, Ora Mesoscale and Nanoscale Physics Spin selective transport is usually associated with spin-orbit interactions. However, these interactions are invariant under time-reversal symmetry, and the Onsager relations and Bardarson's theorem imply that such interactions cannot yield spin selectivity for transport through a junction between two electronic reservoirs. Here, we review several ways to overcome this restriction, using a Zeeman magnetic field, the Aharonov-Bohm phase, time-dependent electric fields that generate time-dependent spin-orbit interactions, time-dependent transients, more than two terminals, leakage, and more than one level per ion on the junction. Our considerations focus on the transport of noninteracting electrons at low temperatures. A possible connection with the phenomenon of chiral-induced spin selectivity (CISS) is pointed out in one of the systems considered. |
| title | Spin-orbit interactions, time-reversal symmetry, and spin selection |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2504.03261 |