Abstract
In the talk I will discuss general properties of the non-centrosymmetric superconductors summarizing the main theoretical and phenomenological concepts standing behind. Apart of that, I will present exciting experimental evidences showing the emergence of i) supercurrent diode effect and Josephson inductance anisotropy [1] in the synthetic Josephson junctions incorporating proximitized 2DEG formed in InAs-quantum wells that possess strong Rashba coupling and large g-factor, ii) zero-pi-like transitions and anomalous Josephson effect [2] in such non-centrosymmetric systems, and, last but not least, also iii) an unexpected enhancement of pinning and squeezing of Abrikosov vortices when probed in such Rashba-based superconductors in a Meissner phase [3]. I will elucidate these phenomena from the microscopic point of view, but as well as, phenomenologically–as a direct manifestation of the Lifshitz invariant that is allowed in the Ginzburg-Landau free energy when the underlying Cooper pairs acquire a finite center of mass momentum.
References
[1] C. Baumgartner, L. Fuchs, A. Costa, S. Reinhardt, S. Gronin, G. Gardner, T. Lindemann, M. Manfra, P. Faria Junior, D. Kochan, J. Fabian, N. Paradiso, C. Strunk; Nature Nanotechnology 17 (1), 39 (2022).
[2] A. Costa, C. Baumgartner, S. Reinhardt, J. Berger, S. Gronin, G. Gardner, T. Lindemann, M. Manfra, J. Fabian, D. Kochan, N. Paradiso, C. Strunk; Nature Nanotechnology 18 (11), 1266 (2023)
[3] L. Fuchs, D. Kochan, C. Baumgartner, S. Reinhardt, S. Gronin, G. Gardner, T. Lindemann, M. Manfra, C. Strunk, N. Paradiso; Physical Review X 12 (4), 041020 (2022).