TY - JOUR
T1 - Transverse thermoelectric transport in a model of many competing order parameters
AU - Wachtel, Gideon
AU - Orgad, Dror
N1 - Publisher Copyright:
© 2014 American Physical Society.
PY - 2014/12/5
Y1 - 2014/12/5
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84916224248&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.90.224506
DO - 10.1103/PhysRevB.90.224506
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AN - SCOPUS:84916224248
SN - 1098-0121
VL - 90
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 22
M1 - 224506
ER -