Large N behavior of Non-Ohmic Tunnel Junctions
Condensed Matter
2007-05-23 v1
Abstract
Non-Ohmic tunnel junctions are believed to occur in systems where the exciton and orthogonality catastrophe effects significantly modify tunneling rates. Here we present a simple non-perturbative treatment of the thermodynamic and transport properties of subOhmic and superOhmic tunnel junctions. The large-N approximation demonstrates the existence of a quantum phase transition in subOhmic but not superOhmic tunnel junctions. In addition, we find a pseudogap which vanishes continuously as the transition is approached.
Keywords
Cite
@article{arxiv.cond-mat/9708194,
title = {Large N behavior of Non-Ohmic Tunnel Junctions},
author = {S. R. Renn},
journal= {arXiv preprint arXiv:cond-mat/9708194},
year = {2007}
}
Comments
4 pages LaTeX. 1 .eps figure