Inversion symmetry of Josephson current as test of chiral domain wall motion in Sr$_{2}$RuO$_{4}$
| Autor: | Saitoh, Kohta, Kashiwaya, Satoshi, Kashiwaya, Hiromi, Mawatari, Yasunori, Asano, Yasuhiro, Tanaka, Yukio, Maeno, Yoshiteru |
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| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Phys. Rev. B 92, 100504(R) (2015) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevB.92.100504 |
| Popis: | Clarifying the chiral domains structure of superconducting Sr$_{2}$RuO$_{4}$ has been a long-standing issue in identifying its peculiar topological superconducting state. We evaluated the critical current $I_{c}$ versus the magnetic field $H$ of Nb/Sr$_{2}$RuO$_{4}$ Josephson junctions, changing the junction dimension in expectation of that the number of domains in the junction is controlled. $I_{c}(H)$ exhibits a recovery from inversion symmetry breaking to invariance when the dimension is reduced to several microns. This inversion invariant behavior indicates the disappearance of domain walls; thus, the size of a single domain is estimated at approximately several microns. Comment: 5 pages, 4 figures, accepted for publication in Phys. Rev. B: Rapid communications |
| Databáze: | arXiv |
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