2014/10/01 by Gideon Wachtel, Dror Orgad · 1 citation
Mathematics · Physics and Astronomy · #Advanced Condensed Matter Physics #Charge (physics) #Condensed matter physics #Cuprate #Electrode #Gaussian #Limit (mathematics) #Mathematical analysis #Mathematics #Nernst effect #Nernst equation #Order (exchange) #Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum mechanics #Seebeck coefficient #Sigma #Statistical physics #Superconductivity #Thermoelectric effect #Transverse plane #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.90.224506
published as Phys. Rev. B 90, 224506 (2014) · 11 pages, 7 figures
arxiv created 2014/10/01 · openalex publication_date 2014/12/05 · arxiv updated 2014/12/10 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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 nonlinear 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, but also indicate that the Nernst signal increases when the charge order fluctuations are suppressed.