Density-functional description of superconducting and magnetic proximity effects across a tunneling barrier
Materials Science
2008-11-24 v2 Superconductivity
Abstract
A density-functional formalism for superconductivity {\em and} magnetism is presented. The resulting relations unify previously derived Kohn-Sham equations for superconductors and for non-collinear magnetism. The formalism, which discriminates Cooper pair singlets from triplets, is applied to two quantum liquids coupled by tunneling through a barrier. An exact expression is derived, relating the eigenstates and eigenvalues of the Kohn-Sham equations, unperturbed by tunneling, on one side of the barrier to the proximity-induced ordering potential on the other.
Keywords
Cite
@article{arxiv.0804.0562,
title = {Density-functional description of superconducting and magnetic proximity effects across a tunneling barrier},
author = {Jorge Quintanilla and Klaus Capelle and Luiz N. Oliveira},
journal= {arXiv preprint arXiv:0804.0562},
year = {2008}
}
Comments
Phys. Rev. B, accepted (2008)