Magnetic properties of superconductors with strong spin-orbit coupling
Superconductivity
2009-11-10 v3 Strongly Correlated Electrons
Abstract
We study the response of a superconductor with a strong spin-orbit coupling on an external magnetic field. The Ginzburg-Landau free energy functional is derived microscopically for a general crystal structure, both with and without an inversion center, and for an arbitrary symmetry of the superconducting order parameter. As a by-product, we obtain the general expressions for the intrinsic magnetic moment of the Cooper pairs. It is shown that the Ginzburg-Landau gradient energy in a superconductor lacking inversion symmetry has unusual structure. The general formalism is illustrated using as an example CePtSi, which is the first known heavy-fermion superconductor without an inversion center.
Keywords
Cite
@article{arxiv.cond-mat/0404407,
title = {Magnetic properties of superconductors with strong spin-orbit coupling},
author = {K. V. Samokhin},
journal= {arXiv preprint arXiv:cond-mat/0404407},
year = {2009}
}
Comments
Published version, 14 pages, minor corrections