Converting a triplet Cooper pair supercurrent into a spin-signal
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arXiv
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| Hauptverfasser: | , |
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| Format: | Preprint |
| Veröffentlicht: |
2023
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| _version_ | 1866914646559031296 |
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| author | Aunsmo, Sigrid Linder, Jacob |
| author_facet | Aunsmo, Sigrid Linder, Jacob |
| contents | Superconductivity with spin-polarized Cooper pairs is known to emerge by combining conventional spinless superconductors with materials that have spin-dependent interactions, such as magnetism and spin-orbit coupling. This enables a dissipationless and conserved flow of spin. However, actually utilizing the spin-polarization of such supercurrents have proven challenging. Here, we predict an experimental signature of current-carrying triplet Cooper pairs in the form of an induced spin-signal. We show that a supercurrent carried only by triplet Cooper pairs induces a non-local magnetization that is controlled by the polarization direction of the triplet Cooper pairs. This provides a measurement protocol to directly use the spin-polarization of the triplet Cooper pairs in supercurrents to transfer spin information in a dissipationless manner. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2308_07226 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Converting a triplet Cooper pair supercurrent into a spin-signal Aunsmo, Sigrid Linder, Jacob Superconductivity Superconductivity with spin-polarized Cooper pairs is known to emerge by combining conventional spinless superconductors with materials that have spin-dependent interactions, such as magnetism and spin-orbit coupling. This enables a dissipationless and conserved flow of spin. However, actually utilizing the spin-polarization of such supercurrents have proven challenging. Here, we predict an experimental signature of current-carrying triplet Cooper pairs in the form of an induced spin-signal. We show that a supercurrent carried only by triplet Cooper pairs induces a non-local magnetization that is controlled by the polarization direction of the triplet Cooper pairs. This provides a measurement protocol to directly use the spin-polarization of the triplet Cooper pairs in supercurrents to transfer spin information in a dissipationless manner. |
| title | Converting a triplet Cooper pair supercurrent into a spin-signal |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2308.07226 |