Baumgartner, Christian and Fuchs, Lorenz and Costa, Andreas and Reinhardt, Simon and Gronin, Sergei and Gardner, Geoffrey C. and Lindemann, Tyler and Manfra, Michael J. and Junior, Paulo E. Faria and Kochan, Denis and Fabian, Jaroslav and Paradiso, Nicola and Strunk, Christoph (2022) Supercurrent rectification and magnetochiral effects in symmetric Josephson junctions. NATURE NANOTECHNOLOGY, 17 (1). pp. 39-44. ISSN 1748-3387, 1748-3395
Full text not available from this repository. (Request a copy)Abstract
Diodes exhibit non-reciprocal current-voltage relations, that is, the resistivity depends on the direction of the current flow. Now an array of Josephson junctions with large spin-orbit interaction acts as the superconducting version of a diode, where dissipation-free supercurrent flows in one direction, but not the other. Transport is non-reciprocal when not only the sign, but also the absolute value of the current depends on the polarity of the applied voltage. It requires simultaneously broken inversion and time-reversal symmetries, for example, by an interplay of spin-orbit coupling and magnetic field. Hitherto, observation of nonreciprocity was tied to resistivity, and dissipationless non-reciprocal circuit elements were elusive. Here we engineer fully superconducting non-reciprocal devices based on highly transparent Josephson junctions fabricated on InAs quantum wells. We demonstrate supercurrent rectification far below the transition temperature. By measuring Josephson inductance, we can link the non-reciprocal supercurrent to an asymmetry of the current-phase relation, and directly derive the supercurrent magnetochiral anisotropy coefficient. A semiquantitative model explains well the main features of our experimental data. Non-reciprocal Josephson junctions have the potential to become for superconducting circuits what pn junctions are for traditional electronics, enabling new non-dissipative circuit elements.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | IRREVERSIBLE-PROCESSES |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Jaroslav Fabian Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Christoph Strunk |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 17 Aug 2022 11:16 |
| Last Modified: | 17 Aug 2022 11:16 |
| URI: | https://pred.uni-regensburg.de/id/eprint/46609 |
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