Stripe order and quasiparticle Nernst effect in cuprate superconductors

Details Stripe order and quasiparticle Nernst effect in cuprate superconductors Stripe order and quasiparticle Nernst effect in cuprate superconductors

2010-08-20

arxiv.org/abs/1008.3472v1

New J. Phys. 12, 105011 (2010)

Physics

Condensed Matter

Superconductivity

10 pages, 4 figs, article prepared for a special issue of New J Phys

Scientific paper

10.1088/1367-2630/12/10/105011

After a brief review of current ideas on stripe order in cuprate high-temperature superconductors, we discuss the quasiparticle Nernst effect in the cuprates, with focus on its evolution in non-superconducting stripe and related nematic states. In general, we find the Nernst signal to be strongly enhanced by nearby van-Hove singularities and Lifshitz transitions in the band structure, implying that phases with translation symmetry breaking often lead to a large quasiparticle Nernst effect due to the presence of multiple small Fermi pockets. Open orbits may contribute to the Nernst signal as well, but do so in a strongly anisotropic fashion. We discuss our results in the light of recent proposals for a specific Lifshitz transition in underdoped YBCO and make predictions for the doping dependence of the Nernst signal.

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