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arXiv · 0908.1088

Quasiparticle Nernst effect in stripe-ordered cuprates

Andreas Hackl·Matthias Vojta·Subir Sachdev
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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.

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Andreas Hackl, Matthias Vojta, Subir Sachdev. 2009-11-30. Quasiparticle Nernst effect in stripe-ordered cuprates. https://doi.org/10.1103/physrevb.81.045102

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