Quantum Theory of Phonon Induced Anomalous Hall Effect in 2D Massive Dirac metals

TL;DR

This paper develops a quantum field theory framework to analyze how phonons induce anomalous Hall effects in 2D massive Dirac metals, revealing temperature-dependent behaviors distinct from Gaussian disorder effects.

Contribution

It provides the first systematic quantum field theory analysis of phonon-induced anomalous Hall effects, including side jump and skew scattering, in 2D massive Dirac metals.

Findings

Significant temperature-dependent differences from Gaussian disorder effects.

Crossover behavior of Hall conductivity from low to high temperature regimes.

Quantitative description of phonon-induced anomalous Hall conductivity.

Abstract

The phonon induced anomalous Hall or thermal Hall effects have been observed in various systems in recent experiments. However, the theoretical studies on this subject are very scarce and incomplete. In this work, we present a systematic quantum field theory study on the phonon induced anomalous Hall effect, including both the side jump and skew scattering contributions, in a 2D massive Dirac metal, which is considered as the minimum anomalous Hall system. We reveal significant difference from the anomalous Hall effect induced by the widely studied Gaussian disorder which is known to be insensitive to temperature. While the anomalous Hall effect induced by phonon approaches that by Gaussian disorder at high temperature, it behaves very differently at low temperature. Our work provides a microscopic and quantitative description of the crossover from the low to high temperature regime of the phonon induced anomalous Hall conductivity, which may be observed in 2D Dirac metals with breaking time reversal symmetry.