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arXiv · 1410.0159

Transverse thermoelectric transport in a model of many competing order parameters

Gideon Wachtel·Dror Orgad
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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.

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Gideon Wachtel, Dror Orgad. 2014-10-01. Transverse thermoelectric transport in a model of many competing order parameters. https://doi.org/10.1103/physrevb.90.224506

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