Josephson interferometer in a ring topology as a proof of the symmetry of Sr2RuO4

Yasuhiro Asano; Yukio Tanaka; Manfred Sigrist; Satoshi Kashiwaya

doi:10.1103/PhysRevB.71.214501

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Josephson interferometer in a ring topology as a proof of the symmetry of Sr2RuO4

Yasuhiro Asano, Yukio Tanaka, Manfred Sigrist, Satoshi Kashiwaya

DOI 10.1103/PhysRevB.71.214501 · Physical Review B

T1

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Abstract

The Josephson effect is theoretically studied in two types of SQUIDs consisting of s wave superconductor and Sr2RuO4. Results show various response of the critical Josephson current to applied magnetic fields depending on the type of SQUID and on the pairing symmetries. In the case of a px+ipy wave symmetry, the critical current in a corner SQUID becomes an asymmetric function of magnetic fields near the critical temperatures. Our results well explain a recent experimental finding [Nelson et al., Science 306, 1151 (2004)]. We also discuss effects of chiral domains on the critical current.

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.	—	Pressure not reported	unknown