Influences of broken time-reversal symmetry on the dc Josephson effects in d-wave superconductors

Yukio Tanaka; Satoshi Kashiwaya

doi:10.1103/PhysRevB.58.R2948

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Influences of broken time-reversal symmetry on the dc Josephson effects in d-wave superconductors

Yukio Tanaka, Satoshi Kashiwaya

DOI 10.1103/PhysRevB.58.R2948 · Physical Review B

T1

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Abstract

In order to examine the influences of the spatial dependence of the pair potential on the Josephson current, the dc Josephson current in d-wave superconductors is calculated using self-consistently determined pair potentials. The results show that the suppression of the d-wave pair potential near the insulator does not have a serious effect on the properties of the Josephson current. On the other hand, drastic changes are obtained due to the inducement of a subdominant s-wave component, which spontaneously breaks time-reversal symmetry. In particular, a rapid enhancement of the Josephson current at low temperature predicted in previous formulas is strongly suppressed.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown