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Broadening of Andreev bound states in dx2−y2 superconductors

A. Poenicke, Yu. S. Barash, C. Bruder, V. Istyukov

DOI 10.1103/PhysRevB.59.7102 · Physical Review B

T1

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Abstract

We investigate the broadening of the bound states at an interface of an unconventional superconductor by bulk impurity scattering. We use the quasiclassical theory and include impurity scattering in the Born and in the unitarity limit. The broadening of bound states due to unitary scatterers is shown to be substantially weaker than in the Born limit. We study various model geometries and calculate the temperature dependence of the Josephson critical current in the presence of these impurity-broadened bound states.

Source-reported materials — not catalogue approval

FormulaReported Tc (K)Pressure (GPa)Type
YBa2Cu3O7-x

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—Pressure not reportedunknown

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