Ferromagnetic superconductivity driven by changing Fermi surface topology
Strongly Correlated Electrons
2009-11-07 v2 Superconductivity
Abstract
We introduce a simple but powerful zero temperature Stoner model to explain the unusual phase diagram of the ferromagnetic superconductor, UGe2. Triplet superconductivity is driven in the ferromagnetic phase by tuning the majority spin Fermi level through one of two peaks in the paramagnetic density of states (DOS). Each peak is associated with a metamagnetic jump in magnetisation. The twin peak DOS may be derived from a tight-binding, quasi-one-dimensional bandstructure, inspired by previous bandstructure calculations.
Cite
@article{arxiv.cond-mat/0210552,
title = {Ferromagnetic superconductivity driven by changing Fermi surface topology},
author = {K. G. Sandeman and G. G. Lonzarich and A. J. Schofield},
journal= {arXiv preprint arXiv:cond-mat/0210552},
year = {2009}
}
Comments
9 pages, 9 figures, REVTeX 4. Version 2: updated references and corrected typos