Symmetry conditions for the superconducting diode effect in chiral superconductors
We analyze the presence of nonreciprocal critical currents, the so-called superconducting diode effect, in chiral superconductors within a generalized Ginzburg-Landau framework. After deriving its key symmetry conditions we illustrate the basic mechanism for two examples, the critical current in a t...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2022-08-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.4.033167 |
| _version_ | 1797210636234522624 |
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| author | Bastian Zinkl Keita Hamamoto Manfred Sigrist |
| author_facet | Bastian Zinkl Keita Hamamoto Manfred Sigrist |
| author_sort | Bastian Zinkl |
| collection | DOAJ |
| description | We analyze the presence of nonreciprocal critical currents, the so-called superconducting diode effect, in chiral superconductors within a generalized Ginzburg-Landau framework. After deriving its key symmetry conditions we illustrate the basic mechanism for two examples, the critical current in a thin film and a Josephson junction. The appearance of spontaneous edge currents and the energy bias for the formation of Josephson vortices play an essential part in establishing a splitting of the critical currents running in opposite directions. Eventually this allows us to interpret a superconducting diode effect observed in the 3-Kelvin phase of Sr_{2}RuO_{4} as evidence for spontaneously broken time-reversal symmetry in the superconducting phase. |
| first_indexed | 2024-04-24T10:13:44Z |
| format | Article |
| id | doaj.art-41197439bff3487a888685ad60e81ce7 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:13:44Z |
| publishDate | 2022-08-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-41197439bff3487a888685ad60e81ce72024-04-12T17:24:07ZengAmerican Physical SocietyPhysical Review Research2643-15642022-08-014303316710.1103/PhysRevResearch.4.033167Symmetry conditions for the superconducting diode effect in chiral superconductorsBastian ZinklKeita HamamotoManfred SigristWe analyze the presence of nonreciprocal critical currents, the so-called superconducting diode effect, in chiral superconductors within a generalized Ginzburg-Landau framework. After deriving its key symmetry conditions we illustrate the basic mechanism for two examples, the critical current in a thin film and a Josephson junction. The appearance of spontaneous edge currents and the energy bias for the formation of Josephson vortices play an essential part in establishing a splitting of the critical currents running in opposite directions. Eventually this allows us to interpret a superconducting diode effect observed in the 3-Kelvin phase of Sr_{2}RuO_{4} as evidence for spontaneously broken time-reversal symmetry in the superconducting phase.http://doi.org/10.1103/PhysRevResearch.4.033167 |
| spellingShingle | Bastian Zinkl Keita Hamamoto Manfred Sigrist Symmetry conditions for the superconducting diode effect in chiral superconductors Physical Review Research |
| title | Symmetry conditions for the superconducting diode effect in chiral superconductors |
| title_full | Symmetry conditions for the superconducting diode effect in chiral superconductors |
| title_fullStr | Symmetry conditions for the superconducting diode effect in chiral superconductors |
| title_full_unstemmed | Symmetry conditions for the superconducting diode effect in chiral superconductors |
| title_short | Symmetry conditions for the superconducting diode effect in chiral superconductors |
| title_sort | symmetry conditions for the superconducting diode effect in chiral superconductors |
| url | http://doi.org/10.1103/PhysRevResearch.4.033167 |
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