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.

11 pages, 7 figures

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• Direct observation of competition between superconductivity and charge density wave order in YBa2Cu3Oy
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Cited by in corpus (3)

• Signatures of thermally excited vortices in a superconductor with competing orders
• Impurity induced phase competition and supersolidity
• Anomalous mesoscopic kinetics in disordered superconductors