Magnetic field tunable vortex diode made of YBa2Cu3O7−δ Josephson junction asymmetrical arrays
Several Josephson ratchets designed as asymmetrically structured parallel-series arrays of Josephson junctions made of YBa2Cu3O7−δ have been fabricated. From the current-voltage characteristics measured for various values of applied magnetic field, B, in the temperature range of 10–89 K, we demonstr...
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| Format: | Article |
| Published: |
AIP Publishing
2017
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| Online Access: | https://eprints.nottingham.ac.uk/45527/ |
| _version_ | 1848797147410989056 |
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| author | Chesca, Boris John, Daniel Pollett, Richard Gaifullin, Marat Cox, Jonathan Mellor, Christopher Savelev, Sergey |
| author_facet | Chesca, Boris John, Daniel Pollett, Richard Gaifullin, Marat Cox, Jonathan Mellor, Christopher Savelev, Sergey |
| author_sort | Chesca, Boris |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Several Josephson ratchets designed as asymmetrically structured parallel-series arrays of Josephson junctions made of YBa2Cu3O7−δ have been fabricated. From the current-voltage characteristics measured for various values of applied magnetic field, B, in the temperature range of 10–89 K, we demonstrate that the devices work as magnetic field-tunable highly reversible vortex diodes. Thus, at 89 K, the ratchet efficiency η could be reversed from +60% to −60% with a change in B as small as 3 μT. By decreasing the operation temperature, η improves up to −95% at 10 K while the dynamics in the B-tunability degrades. The ratchet designs we propose here can be used to control unidirectional vortex flow vortices in superconducting devices as well as building integrated nano-magnetic sensors. Numerical simulations qualitatively confirm our experimental findings and also provide insight into the related and more general problem of the control of the transport of nano/quantum objects in thin films. |
| first_indexed | 2025-11-14T19:59:15Z |
| format | Article |
| id | nottingham-45527 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:59:15Z |
| publishDate | 2017 |
| publisher | AIP Publishing |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-455272020-05-04T18:59:26Z https://eprints.nottingham.ac.uk/45527/ Magnetic field tunable vortex diode made of YBa2Cu3O7−δ Josephson junction asymmetrical arrays Chesca, Boris John, Daniel Pollett, Richard Gaifullin, Marat Cox, Jonathan Mellor, Christopher Savelev, Sergey Several Josephson ratchets designed as asymmetrically structured parallel-series arrays of Josephson junctions made of YBa2Cu3O7−δ have been fabricated. From the current-voltage characteristics measured for various values of applied magnetic field, B, in the temperature range of 10–89 K, we demonstrate that the devices work as magnetic field-tunable highly reversible vortex diodes. Thus, at 89 K, the ratchet efficiency η could be reversed from +60% to −60% with a change in B as small as 3 μT. By decreasing the operation temperature, η improves up to −95% at 10 K while the dynamics in the B-tunability degrades. The ratchet designs we propose here can be used to control unidirectional vortex flow vortices in superconducting devices as well as building integrated nano-magnetic sensors. Numerical simulations qualitatively confirm our experimental findings and also provide insight into the related and more general problem of the control of the transport of nano/quantum objects in thin films. AIP Publishing 2017-08-08 Article PeerReviewed Chesca, Boris, John, Daniel, Pollett, Richard, Gaifullin, Marat, Cox, Jonathan, Mellor, Christopher and Savelev, Sergey (2017) Magnetic field tunable vortex diode made of YBa2Cu3O7−δ Josephson junction asymmetrical arrays. Applied Physics Letters, 111 (6). 062602. ISSN 0003-6951 http://aip.scitation.org/doi/10.1063/1.4997741 doi:10.1063/1.4997741 doi:10.1063/1.4997741 |
| spellingShingle | Chesca, Boris John, Daniel Pollett, Richard Gaifullin, Marat Cox, Jonathan Mellor, Christopher Savelev, Sergey Magnetic field tunable vortex diode made of YBa2Cu3O7−δ Josephson junction asymmetrical arrays |
| title | Magnetic field tunable vortex diode made of YBa2Cu3O7−δ Josephson junction asymmetrical arrays |
| title_full | Magnetic field tunable vortex diode made of YBa2Cu3O7−δ Josephson junction asymmetrical arrays |
| title_fullStr | Magnetic field tunable vortex diode made of YBa2Cu3O7−δ Josephson junction asymmetrical arrays |
| title_full_unstemmed | Magnetic field tunable vortex diode made of YBa2Cu3O7−δ Josephson junction asymmetrical arrays |
| title_short | Magnetic field tunable vortex diode made of YBa2Cu3O7−δ Josephson junction asymmetrical arrays |
| title_sort | magnetic field tunable vortex diode made of yba2cu3o7−δ josephson junction asymmetrical arrays |
| url | https://eprints.nottingham.ac.uk/45527/ https://eprints.nottingham.ac.uk/45527/ https://eprints.nottingham.ac.uk/45527/ |