Phase diagram of geometric d-wave superconductor Josephson junctions
Superconductivity
2009-11-13 v2
Abstract
We show that a constriction-type Josephson junction realized by an epitactic thin film of a d-wave superconductor with an appropriate boundary geometry exhibits intrinsic phase differences between 0 and pi depending on geometric parameters and temperature. Based on microscopic Eilenberger theory, we provide a general derivation of the relation between the change of the free energy of the junction and the current-phase relation. From the change of the free energy, we calculate phase diagrams and discuss transitions driven by geometric parameters and temperature.
Cite
@article{arxiv.0808.2140,
title = {Phase diagram of geometric d-wave superconductor Josephson junctions},
author = {A. Gumann and N. Schopohl},
journal= {arXiv preprint arXiv:0808.2140},
year = {2009}
}
Comments
9 pages, 11 figures. Phys. Rev. B, accepted