Electronic States on a Twin Boundary of a d-Wave Superconductor

M. E. Zhitomirsky; M. B. Walker

doi:10.1103/PhysRevLett.79.1734

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Electronic States on a Twin Boundary of a d-Wave Superconductor

M. E. Zhitomirsky, M. B. Walker

DOI 10.1103/PhysRevLett.79.1734 · Physical Review Letters

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Abstract

We show that an induced s-wave harmonic in the superconducting gap of an orthorhombic dx2−y2 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.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O6+x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Pb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown