Costa, A. and Baumgartner, C. and Reinhardt, S. and Berger, J. and Gronin, S. and Gardner, G. C. and Lindemann, T. and Manfra, M. J. and Fabian, J. and Kochan, D. and Paradiso, N. and Strunk, C. (2023) Sign reversal of the Josephson inductance magnetochiral anisotropy and 0-π-like transitions in supercurrent diodes. NATURE NANOTECHNOLOGY, 18. pp. 1266-1272. ISSN 1748-3387, 1748-3395
Full text not available from this repository. (Request a copy)Abstract
The recent discovery of the intrinsic supercurrent diode effect, and its prompt observation in a rich variety of systems, has shown that non-reciprocal supercurrents naturally emerge when both space-inversion and time-inversion symmetries are broken. In Josephson junctions, non-reciprocal supercurrent can be conveniently described in terms of spin-split Andreev states. Here we demonstrate a sign reversal of the Josephson inductance magnetochiral anisotropy, a manifestation of the supercurrent diode effect. The asymmetry of the Josephson inductance as a function of the supercurrent allows us to probe the current-phase relation near equilibrium, and to probe jumps in the junction ground state. Using a minimal theoretical model, we can then link the sign reversal of the inductance magnetochiral anisotropy to the so-called 0-& pi;-like transition, a predicted but still elusive feature of multichannel junctions. Our results demonstrate the potential of inductance measurements as sensitive probes of the fundamental properties of unconventional Josephson junctions. A sudden inversion of the supercurrent diode effect is revealed in both inductance and critical current measurements in ballistic Josephson junctions. A simple analytical model shows that the inversion is associated with a ground state jump, the elusive 0-& pi;-like transition.
| Item Type: | Article |
|---|---|
| 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: | 13 Mar 2024 10:50 |
| Last Modified: | 13 Mar 2024 10:50 |
| URI: | https://pred.uni-regensburg.de/id/eprint/59650 |
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