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

Article

关键词: TUNNELING SPECTROSCOPY;    ANDREEV REFLECTION;    SURFACE-STATES;    JUNCTIONS;   

DOI  :  10.1103/PhysRevB.58.R2948

来源: SCIE

【 摘 要 】

In order to examine the influences of the spatial dependence of the pair potential on the Josephson current, the de Josephson current in d-wave superconductors is calculated using self-consistently determined pal 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 a-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.

【 授权许可】

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