Characterization of Sr2RuO4 Josephson junctions made of epitaxial films
Masaki Uchida, Ikkei Sakuraba, Minoru Kawamura, Motoharu Ide, Kei S. Takahashi, Yoshinori Tokura, Masashi Kawasaki
DOI 10.1103/PhysRevB.101.035107 · Physical Review B
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Abstract
We have studied the fundamental properties of weak-link Sr2RuO4/Sr2RuO4 Josephson junctions fabricated by making a narrow constriction on superconducting Sr2RuO4 films through laser micropatterning. The junctions show a typical overdamped behavior with much higher critical current density compared with those previously reported for bulk Sr2RuO4/s-wave-superconductor junctions. Observed magnetic-field and temperature dependencies of the Josephson critical current suggest that the chiral p wave is unlikely for the superconducting symmetry, encouraging further theoretical calculations of the Sr2RuO4/Sr2RuO4-type junctions.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Sr2RuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.2 | Pressure not reported | midpoint |
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