A phenomenological theory of superconductor diodes
By J. J. He, Yukio Tanaka, N. Nagaosa. New Journal of Physics, 2021
286 citations recorded by the source corpus.
Nonreciprocal responses in noncentrosymmetric systems contain a broad range of phenomena. Especially, non-dissipative and coherent nonreciprocal transport in solids is an important fundamental issue. The recent discovery of superconductor (SC) diodes under external magnetic fields, where the magnitude of the critical current changes as the direction is reversed, significantly boosted this research area. However, a theoretical understanding of such phenomena is lacking. Here, we provide theoretical descriptions of SC diodes with a generalized Ginzburg–Landau method. The theory is applied to Rashba spin–orbit coupled systems, where analytical relations between the nonreciprocal critical currents and the system parameters are achieved. Numerical calculations with mean-field theory are also obtained to study broader parameter regions. These results offer a rather general description and design principles of SC diodes.
Subfields: Atomic and Molecular Physics, and Optics, Condensed Matter Physics
View Paper: https://www.semanticscholar.org/paper/075ddeacda9eca4e2bc99b66c25c6b1119da1a7f
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In Condensed Matter Physics
Citations in the corpus
- General Theory of Josephson Diodes (2021, methodology): “For the JD effects using the magnetochiral anisotropy and the asymmetric edge states, both of them are T breaking JD [8, 31, 35, 38].”
- Theory of zero-field superconducting diode effect in twisted trilayer graphene (2021, unknown): “Although the main focus of this work is on the ZFDE, we briefly comment on the Zeeman-field induced diode effect, which has already been studied previously in two-dimensional spin-orbit coupled systems [3–5].”