Spin-Orbit Splitting of Andreev States Revealed by Microwave Spectroscopy
We perform microwave spectroscopy of Andreev states in superconducting weak links tailored in an InAs-Al (core-full shell) epitaxially grown nanowire. The spectra present distinctive features with bundles of four lines crossing when the superconducting phase difference across the weak link is 0 or π...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2019-01-01
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| Series: | Physical Review X |
| Online Access: | http://doi.org/10.1103/PhysRevX.9.011010 |
| _version_ | 1818730725999902720 |
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| author | L. Tosi C. Metzger M. F. Goffman C. Urbina H. Pothier Sunghun Park A. Levy Yeyati J. Nygård P. Krogstrup |
| author_facet | L. Tosi C. Metzger M. F. Goffman C. Urbina H. Pothier Sunghun Park A. Levy Yeyati J. Nygård P. Krogstrup |
| author_sort | L. Tosi |
| collection | DOAJ |
| description | We perform microwave spectroscopy of Andreev states in superconducting weak links tailored in an InAs-Al (core-full shell) epitaxially grown nanowire. The spectra present distinctive features with bundles of four lines crossing when the superconducting phase difference across the weak link is 0 or π. We interpret these features as arising from zero-field spin-split Andreev states. A simple analytical model, which takes into account the Rashba spin-orbit interaction in a nanowire containing several transverse subbands, explains these features and their evolution with magnetic field. Our results show that the spin degree of freedom is addressable in Josephson junctions and constitute a first step towards its manipulation. |
| first_indexed | 2024-12-17T23:06:21Z |
| format | Article |
| id | doaj.art-46d54f39692346b89f68d6e9062bc077 |
| institution | Directory Open Access Journal |
| issn | 2160-3308 |
| language | English |
| last_indexed | 2024-12-17T23:06:21Z |
| publishDate | 2019-01-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review X |
| spelling | doaj.art-46d54f39692346b89f68d6e9062bc0772022-12-21T21:29:16ZengAmerican Physical SocietyPhysical Review X2160-33082019-01-019101101010.1103/PhysRevX.9.011010Spin-Orbit Splitting of Andreev States Revealed by Microwave SpectroscopyL. TosiC. MetzgerM. F. GoffmanC. UrbinaH. PothierSunghun ParkA. Levy YeyatiJ. NygårdP. KrogstrupWe perform microwave spectroscopy of Andreev states in superconducting weak links tailored in an InAs-Al (core-full shell) epitaxially grown nanowire. The spectra present distinctive features with bundles of four lines crossing when the superconducting phase difference across the weak link is 0 or π. We interpret these features as arising from zero-field spin-split Andreev states. A simple analytical model, which takes into account the Rashba spin-orbit interaction in a nanowire containing several transverse subbands, explains these features and their evolution with magnetic field. Our results show that the spin degree of freedom is addressable in Josephson junctions and constitute a first step towards its manipulation.http://doi.org/10.1103/PhysRevX.9.011010 |
| spellingShingle | L. Tosi C. Metzger M. F. Goffman C. Urbina H. Pothier Sunghun Park A. Levy Yeyati J. Nygård P. Krogstrup Spin-Orbit Splitting of Andreev States Revealed by Microwave Spectroscopy Physical Review X |
| title | Spin-Orbit Splitting of Andreev States Revealed by Microwave Spectroscopy |
| title_full | Spin-Orbit Splitting of Andreev States Revealed by Microwave Spectroscopy |
| title_fullStr | Spin-Orbit Splitting of Andreev States Revealed by Microwave Spectroscopy |
| title_full_unstemmed | Spin-Orbit Splitting of Andreev States Revealed by Microwave Spectroscopy |
| title_short | Spin-Orbit Splitting of Andreev States Revealed by Microwave Spectroscopy |
| title_sort | spin orbit splitting of andreev states revealed by microwave spectroscopy |
| url | http://doi.org/10.1103/PhysRevX.9.011010 |
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