Anomalous Nernst effect from a chiral d-density wave state in underdoped cuprate superconductors

Details Anomalous Nernst effect from a chiral d-density wave state in underdoped cuprate superconductors Anomalous Nernst effect from a chiral d-density wave state in underdoped cuprate superconductors

2008-03-21

arxiv.org/abs/0803.3220v2

Phys. Rev. B 78, 174508 (2008)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 3 figures, accepted for publication in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.78.174508

We show that the breakdown of time-reversal invariance, confirmed by the recent polar Kerr effect measurements in the cuprates, implies the existence of an anomalous Nernst effect in the pseudogap phase of underdoped cuprate superconductors. Modeling the time-reversal-breaking ordered state by the chiral d-density-wave state, we find that the magnitude of the Nernst effect can be sizable even at temperatures much higher than the superconducting transition temperature. These results imply that the experimentally found Nernst effect at the pseudogap temperatures may be due to the chiral d-density wave ordered state with broken time-reversal invariance.

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