Twin boundaries in d-wave superconductors
D. L. Feder, A. Beardsall, A. J. Berlinsky, C. Kallin
DOI 10.1103/PhysRevB.56.R5751 · Physical Review B
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Abstract
Twin boundaries in orthorhombic d-wave superconductors are investigated numerically using the Bogoliubov–deGennes formalism within the context of an extended Hubbard model. The twin boundaries are represented by tetragonal regions of variable width, with a reduced chemical potential. For sufficiently large twin boundary width and change in chemical potential, an induced s-wave component may break time-reversal symmetry at a low temperature T*. The temperature T*, and the magnitude of the imaginary component, are found to depend strongly on electron density. The results are compared with recent tunneling measurements.
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. | 60 | Pressure not reported | unknown |
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