Transverse thermoelectric transport in a model of many competing order parameters
Abstract
Coexisting fluctuations towards various ordered states are ubiquitous in strongly correlated electronic systems. In particular, measurements of underdoped cuprate high-temperature superconductors reveal evidence for short range charge order in parallel to large superconducting fluctuations. Here we use a non-linear sigma model to describe a system with N competing orders, and calculate its transverse thermoelectric transport coefficient in the analytically tractable limit of large N . Our results, which determine the contribution of order parameter fluctuations to the Nernst signal, are appropriate for high temperatures in the case of finite N . They are similar to previously obtained results within a model of Gaussian superconducting fluctuations.
Keywords
Cite
@article{arxiv.1410.0159,
title = {Transverse thermoelectric transport in a model of many competing order parameters},
author = {Gideon Wachtel and Dror Orgad},
journal= {arXiv preprint arXiv:1410.0159},
year = {2014}
}
Comments
11 pages, 7 figures