Charge instabilities at the metamagnetic transition
Strongly Correlated Electrons
2007-05-23 v2 Superconductivity
Abstract
We investigate instabilities in the charge channel in the vicinity of (meta-)magnetic transitions of itinerant electron systems. Based on a weak coupling analysis we argue that in a one-band - Hubbard model near the van Hove filling and dominant ferromagnetic fluctuations it is difficult to account for a microscopic mechanism for a d-wave Pomeranchuk deformation of the Fermi surface. A similar deformation has been considered for the metamagnetic transition in SrRuO. As an alternative we discuss the possibility of charge inhomogeneity on the nano scale. This extends the analogy of the metamagnetic transition to a liquid-gas transition.
Cite
@article{arxiv.cond-mat/0502370,
title = {Charge instabilities at the metamagnetic transition},
author = {Carsten Honerkamp},
journal= {arXiv preprint arXiv:cond-mat/0502370},
year = {2007}
}
Comments
4 pages, 2 figures