Quasiparticle Nernst effect in stripe-ordered cuprates
Abstract
Experiments on underdoped cuprate superconductors suggest an intricate relation between the normal-state Nernst effect and stripe order: The Nernst signal appears enhanced near 1/8 hole doping and its onset temperature scales with the stripe-ordering temperature over some range of doping. Here, we employ a phenomenological quasiparticle model to calculate the normal state Nernst signal in the presence of stripe order. We find that Fermi pockets caused by translational symmetry breaking lead to a strongly enhanced Nernst signal with a sign depending on the modulation period of the ordered state and other details of the Fermi surface. This implies differences between antiferromagnetic and charge-only stripes We compare our findings with recent data from Nd-LSCO and YBCO.
Cite
@article{arxiv.0908.1088,
title = {Quasiparticle Nernst effect in stripe-ordered cuprates},
author = {Andreas Hackl and Matthias Vojta and Subir Sachdev},
journal= {arXiv preprint arXiv:0908.1088},
year = {2010}
}
Comments
16 pages, 14 figures, discussion of signal anisotropy included now; some clarifications added to formulas and experimental implications