Deformation-induced time-reversal symmetry breaking in d-wave superconductors

A. B. Kuklov

doi:10.1103/PhysRevB.52.R7002

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Deformation-induced time-reversal symmetry breaking in d-wave superconductors

A. B. Kuklov

DOI 10.1103/PhysRevB.52.R7002 · Physical Review B

T1

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Abstract

A mechanism for the time-reversal (T) symmetry breaking in the superconducting state characterized by one-component irreducible representation (e.g., dx2−y2 of the tetragonal symmetry) of the pair function is suggested. This mechanism relies on the fact that gradients of the crystal distortions cause an admixture of another irreducible representation (e.g., dxy or s wave) favoring the phase shift of π/2 between these representations. As a consequence, spontaneous superconducting currents and magnetic fields not restricted by the flux quantization condition could exist around structural defects of the crystal lattice. One example of the resulting current and magnetic-field distributions which could be tested experimentally is considered.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown