Twin boundaries in d-wave superconductors
Superconductivity
2009-10-30 v1
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. This temperature, and the magnitude of the complex component, are found to depend strongly on electron density. The results are compared with recent tunneling measurements.
Cite
@article{arxiv.cond-mat/9705139,
title = {Twin boundaries in d-wave superconductors},
author = {D. L. Feder and A. Beardsall and A. J. Berlinsky and C. Kallin},
journal= {arXiv preprint arXiv:cond-mat/9705139},
year = {2009}
}
Comments
ReVTeX, 4 pages, 4 postscript figures