``Cold spots'': a new model for transport in high $T_c$ cuprates

TL;DR

This paper introduces a Boltzmann equation model for high-temperature cuprates with anisotropic electron lifetimes, successfully explaining several transport measurements but not magnetoresistance, and discusses potential microscopic causes.

Contribution

It proposes a new transport model with anisotropic lifetimes based on experimental data, providing quantitative agreement for resistivity and Hall effects in cuprates.

Findings

Quantitative agreement with ac and dc resistivity measurements

Successful modeling of Hall resistivity

Discrepancy in predicted magnetoresistance

Abstract

We present a Boltzmann equation analysis of the transport properties of a model of electrons with a lifetime which is short everywhere except near the Brillouin zone diagonals. The anomalous lifetime is directly implied by photoemission and c-axis transport data. We find quantitative agreement between calculations and ac and dc longitudinal and Hall resistivity, but the predicted longitudinal magnetoresistance disagrees with experiment. A possible microscopic origin of the anomalous lifetime is discussed