Magnetotransport in Cuprates: a Test of the Spin Fluctuation Model

TL;DR

This paper tests the spin fluctuation model against magnetotransport data in cuprates, showing it explains key experimental features and aligns with NMR measurements, supporting its validity in describing cuprate behavior.

Contribution

It provides a simple calculation demonstrating that the nearly antiferromagnetic Fermi liquid model explains magnetotransport phenomena in cuprates, aligning with experimental data.

Findings

Explains violation of K"ohler's rule

Reproduces doping dependence of magnetoresistance

Aligns with NMR-derived parameters

Abstract

We report on a simple calculation of the magnetotransport in cuprate superconductors, based on the nearly antiferromagnetic Fermi liquid (spin fluctuation) model. We find that the model explains all important features seen experimentally: the violation of K"ohler's rule, the close relationship between the Hall angle and the magnetoresistance, the temperature dependence of the first high field correction to MR and the doping dependence of the low field MR data. In addition, the estimated values of omega_c tau, calculated using parameters obtained from the NMR measurements, yield values in close agreement with those found experimentally for overdoped and optimally doped cuprates.