Charge and spin transport in mesoscopic superconductors
Background: Non-equilibrium charge transport in superconductors has been investigated intensely in the 1970s and 1980s, mostly in the vicinity of the critical temperature. Much less attention has been paid to low temperatures and the role of the quasiparticle spin.Results: We report here on nonlocal...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Beilstein-Institut
2014-02-01
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| Series: | Beilstein Journal of Nanotechnology |
| Subjects: | |
| Online Access: | https://doi.org/10.3762/bjnano.5.18 |
| _version_ | 1818147693173669888 |
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| author | M. J. Wolf F. Hübler S. Kolenda D. Beckmann |
| author_facet | M. J. Wolf F. Hübler S. Kolenda D. Beckmann |
| author_sort | M. J. Wolf |
| collection | DOAJ |
| description | Background: Non-equilibrium charge transport in superconductors has been investigated intensely in the 1970s and 1980s, mostly in the vicinity of the critical temperature. Much less attention has been paid to low temperatures and the role of the quasiparticle spin.Results: We report here on nonlocal transport in superconductor hybrid structures at very low temperatures. By comparing the nonlocal conductance obtained by using ferromagnetic and normal-metal detectors, we discriminate charge and spin degrees of freedom. We observe spin injection and long-range transport of pure, chargeless spin currents in the regime of large Zeeman splitting. We elucidate charge and spin transport by comparison to theoretical models.Conclusion: The observed long-range chargeless spin transport opens a new path to manipulate and utilize the quasiparticle spin in superconductor nanostructures. |
| first_indexed | 2024-12-11T12:39:18Z |
| format | Article |
| id | doaj.art-69c2ba706a5c4fd280dfcf735f0f4f7f |
| institution | Directory Open Access Journal |
| issn | 2190-4286 |
| language | English |
| last_indexed | 2024-12-11T12:39:18Z |
| publishDate | 2014-02-01 |
| publisher | Beilstein-Institut |
| record_format | Article |
| series | Beilstein Journal of Nanotechnology |
| spelling | doaj.art-69c2ba706a5c4fd280dfcf735f0f4f7f2022-12-22T01:07:01ZengBeilstein-InstitutBeilstein Journal of Nanotechnology2190-42862014-02-015118018510.3762/bjnano.5.182190-4286-5-18Charge and spin transport in mesoscopic superconductorsM. J. Wolf0F. Hübler1S. Kolenda2D. Beckmann3Karlsruher Institut für Technologie (KIT), Institut für Nanotechnologie, P.O. Box 3640, D-72021 Karlsruhe, GermanyKarlsruher Institut für Technologie (KIT), Institut für Nanotechnologie, P.O. Box 3640, D-72021 Karlsruhe, GermanyKarlsruher Institut für Technologie (KIT), Institut für Nanotechnologie, P.O. Box 3640, D-72021 Karlsruhe, GermanyKarlsruher Institut für Technologie (KIT), Institut für Nanotechnologie, P.O. Box 3640, D-72021 Karlsruhe, GermanyBackground: Non-equilibrium charge transport in superconductors has been investigated intensely in the 1970s and 1980s, mostly in the vicinity of the critical temperature. Much less attention has been paid to low temperatures and the role of the quasiparticle spin.Results: We report here on nonlocal transport in superconductor hybrid structures at very low temperatures. By comparing the nonlocal conductance obtained by using ferromagnetic and normal-metal detectors, we discriminate charge and spin degrees of freedom. We observe spin injection and long-range transport of pure, chargeless spin currents in the regime of large Zeeman splitting. We elucidate charge and spin transport by comparison to theoretical models.Conclusion: The observed long-range chargeless spin transport opens a new path to manipulate and utilize the quasiparticle spin in superconductor nanostructures.https://doi.org/10.3762/bjnano.5.18spintronicssuperconductor–ferromagnet hybrids |
| spellingShingle | M. J. Wolf F. Hübler S. Kolenda D. Beckmann Charge and spin transport in mesoscopic superconductors Beilstein Journal of Nanotechnology spintronics superconductor–ferromagnet hybrids |
| title | Charge and spin transport in mesoscopic superconductors |
| title_full | Charge and spin transport in mesoscopic superconductors |
| title_fullStr | Charge and spin transport in mesoscopic superconductors |
| title_full_unstemmed | Charge and spin transport in mesoscopic superconductors |
| title_short | Charge and spin transport in mesoscopic superconductors |
| title_sort | charge and spin transport in mesoscopic superconductors |
| topic | spintronics superconductor–ferromagnet hybrids |
| url | https://doi.org/10.3762/bjnano.5.18 |
| work_keys_str_mv | AT mjwolf chargeandspintransportinmesoscopicsuperconductors AT fhubler chargeandspintransportinmesoscopicsuperconductors AT skolenda chargeandspintransportinmesoscopicsuperconductors AT dbeckmann chargeandspintransportinmesoscopicsuperconductors |