Quasiparticle Nernst effect in stripe-ordered cuprates

2009/08/31 by Andreas Hackl, Matthias Vojta, Subir Sachdev · 2 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Anisotropy #Antiferromagnetism #Condensed matter physics #Cuprate #Doping #Electrode #Fermi surface #Magnetic and transport properties of perovskites and related materials #Nernst effect #Nernst equation #Order (exchange) #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Quasiparticle #Superconductivity #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevb.81.045102

published as Phys. Rev. B 81, 045102 (2010) · 16 pages, 14 figures, discussion of signal anisotropy included now; some clarifications added to formulas and experimental implications

arxiv created 2009/11/30 · openalex publication_date 2010/01/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

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 also analyze the anisotropy of the Nernst signal and compare our findings with recent data from La_1.6\ensuremath-xNd_0.4Sr_xCuO₄ and YBa₂Cu₃O_y.

Citations

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