Order parameter symmetry in ferromagnetic superconductors
Superconductivity
2009-11-07 v1
Abstract
We analyze the symmetry and the nodal structure of the superconducting order parameter in a cubic ferromagnet, such as ZrZn. We demonstrate how the order parameter symmetry evolves when the electromagnetic interaction of the conduction electrons with the internal magnetic induction and the spin-orbit coupling are taken into account. These interactions break the cubic symmetry and lift the degeneracy of the order parameter. It is shown that the order parameter which appears immediately below the critical temperature has two components, and its symmetry is described by {\em co-representations} of the magnetic point groups. This allows us to make predictions about the location of the gap nodes.
Cite
@article{arxiv.cond-mat/0206487,
title = {Order parameter symmetry in ferromagnetic superconductors},
author = {K. V. Samokhin and M. B. Walker},
journal= {arXiv preprint arXiv:cond-mat/0206487},
year = {2009}
}
Comments
12 pages, ReVTeX, submitted to PRB