What is wrong with paramagnons?
Abstract
Systems with itinerant fermions close to a zero temperature quantum phase transition like the high temperature superconductors exhibit unusual non-Fermi liquid properties. The interaction of the long-range and low-energy fluctuations of the incipient order with the fermions modify the dynamical properties of the fermions strongly by inducing effective long-range interactions. Close to the transition the interaction of the order parameter fluctuations becomes important. In this paper we discuss the physics of the non-Gaussian order parameter fluctuations on the electronic spectrum and illustrate their effect by considering the charge-density-wave transition and the phase fluctuations in a two-dimensional d-wave superconductor.
Cite
@article{arxiv.cond-mat/0110178,
title = {What is wrong with paramagnons?},
author = {Hartmut Monien},
journal= {arXiv preprint arXiv:cond-mat/0110178},
year = {2007}
}
Comments
12 pages, 5 figures