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

Chuanwei Zhang; Sumanta Tewari; Victor M. Yakovenko; S. Das Sarma

doi:10.1103/PhysRevB.78.174508

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

Chuanwei Zhang, Sumanta Tewari, Victor M. Yakovenko, S. Das Sarma

DOI 10.1103/PhysRevB.78.174508 · Physical Review B

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Abstract

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.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3Ox Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown