2009/02/28 by Sumanta Tewari, Chuanwei Zhang · 2 citations
Chemistry · Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Chemistry #Condensed matter physics #Cuprate #Electrical resistivity and conductivity #Fermi surface #Magnetism in coordination complexes #Nernst effect #Nernst equation #Oscillation (cell signaling) #Physics #Physics of Superconductivity and Magnetism #Pseudogap #Quantum mechanics #Quasiparticle #Seebeck coefficient #Superconductivity #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.103.077001
published as Phys. Rev. Lett. 103, 077001 (2009) · 4 pages, 2 eps figures; parts rewritten, new references added; version as published in PRL
openalex publication_date 2009/08/10 · arxiv created 2009/08/14 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We consider the Nernst effect in the normal state of the underdoped cuprate superconductors, where recent quantum oscillation experiments have indicated the existence of Fermi surface pockets and quasiparticle ambipolarity in the excitation spectrum. Using an ambipolar d-density-wave model for the pseudogap, we predict a peak in the Nernst coefficient with decreasing temperature below the pseudogap temperature. The existence of the peak and its sign, which we predict to be the same as that due to mobile vortices in a superconductor, result from the dominance of the electron pocket at low temperatures, as has been observed in recent Hall experiments.