Spontaneous flux in a d-wave superconductor with time-reversal-symmetry-broken pairing state at {110}-oriented boundaries

Article

关键词: HIGH-TEMPERATURE SUPERCONDUCTORS;    YBA2CU3O7 TUNNEL-JUNCTIONS;    T-C SUPERCONDUCTORS;    TWIN BOUNDARIES;    BREAKING STATES;    SURFACE-STATES;    THIN-FILMS;    ANOMALIES;   

DOI  :  10.1103/PhysRevB.60.R3739

来源: SCIE

【 摘 要 】

The induction of an s-wave component in a d-wave superconductor is considered. Near the (110)-oriented edges of such a sample, the induced s-wave order parameter together with the d-wave component forms a complex combination d+e(i phi)s, which breaks the time-reversal symmetry (BTRS) of the pairing state. As a result, the spontaneous current is created. We numerically study the current distribution and the formation of the spontaneous flux induced by the current. We show that the spontaneous flux formed from a number of defect lines with(110) orientation has a measurable strength. This result may provide an unambiguous way to check the existence of the BTRS pairing state at(110)-oriented boundaries. [S0163-1829(99)50130-6].

【 授权许可】

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