Fluctuation-driven insulator-to-metal transition in an external magnetic field
Strongly Correlated Electrons
2009-10-31 v1
Abstract
We consider a model for a metal-insulator transition of correlated electrons in an external magnetic field. We find a broad region in interaction and magnetic field where metallic and insulating (fully magnetized) solutions coexist and the system undergoes a first-order metal-insulator transition. A global instability of the magnetically saturated solution precedes the local ones and is caused by collective fluctuations due to poles in electron-hole vertex functions.
Keywords
Cite
@article{arxiv.cond-mat/9908241,
title = {Fluctuation-driven insulator-to-metal transition in an external magnetic field},
author = {V. Janis and G. Czycholl},
journal= {arXiv preprint arXiv:cond-mat/9908241},
year = {2009}
}
Comments
REVTeX 4 pages, 3 PS figures