On the interpretation of the Nernst effect measurements in the cuprates

TL;DR

This paper analyzes the large Nernst signal in hole-doped cuprates, discussing its interpretation as superconducting fluctuations and its implications for understanding pseudogap phenomena.

Contribution

It provides a detailed discussion on the interpretation of Nernst effect measurements in cuprates, linking experimental data with theoretical models of superconducting fluctuations.

Findings

Nernst signal in cuprates is consistent with superconducting fluctuations.

The vortex scenario explains the large Nernst effect in the pseudogap regime.

Implications for pseudogap phenomena are discussed.

Abstract

We consider the large Nernst signal discovered by Ong and collaborators in hole-doped cuprates, in particular in the pseudogap regime. Based on our previous quantitative calculations together with Huse [Phys. Rev. Lett. 89, 287001 (2002)], we discuss the interpretation of the experimental observations as arising from superconducting fluctuations and its relation to the vortex scenario proposed by Ong. We also comment on the implications of the Nernst analysis for understanding the full range of pseudogap phenomena.