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

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

1998-10-16

arxiv.org/abs/cond-mat/9810205v2

Physics

Condensed Matter

Superconductivity

4 pages, 2 ps-figures, content changed, references added

Scientific paper

10.1103/PhysRevB.60.R3739

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 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 a unambiguous way to check the existence of BTRS pairing state at {110}-oriented boundaries.

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