Nernst effect in the electron-doped cuprates

TL;DR

This paper calculates the Nernst effect in electron-doped cuprates, showing how Fermi surface reconstruction due to spin density wave order enhances the Nernst signal near optimal doping, aligning with experimental data.

Contribution

It provides a theoretical calculation linking Fermi surface reconstruction to Nernst signal enhancement in electron-doped cuprates, consistent with experiments.

Findings

Enhanced Nernst signal near optimal doping due to Fermi surface reconstruction

Agreement between semiclassical calculations and experimental measurements

Identification of spin density wave order as a key factor

Abstract

We calculate the normal state Nernst signal in the cuprates resulting from a reconstruction of the Fermi surface due to spin density wave order. An order parameter consistent with the reconstruction of the Fermi surface detected in electron-doped materials is shown to sharply enhance the Nernst signal close to optimal doping. Within a semiclassical treatment, the obtained magnitude and position of the enhanced Nernst signal agrees with Nernst measurements in electron-doped cuprates.