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arXiv · cond-mat/9705202

Electronic states on a twin boundary of a d-wave superconductor

M. E. Zhitomirsky·M. B. Walker
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Abstract

We show that an induced $s$-wave harmonic in the superconducting gap of an orthorhombic $d_{x^2-y^2}$ superconductor strongly affects the excitation spectrum near a twinning plane. In particular, it yields bound states of zero energy with areal density proportional to the relative weight of the $s$-wave component. An unusual scattering process responsible for the thermal conductivity across the twin boundary at low temperatures is also identified.

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M. E. Zhitomirsky, M. B. Walker. 1997-05-20. Electronic states on a twin boundary of a d-wave superconductor. https://doi.org/10.1103/physrevlett.79.1734

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