Reshaping the anomalous Hall response in tilted 3D system with disorder correction

TL;DR

This paper investigates how disorder and tilt affect the anomalous Hall conductivity in 3D Dirac nodal line semimetals, revealing the dominance of extrinsic contributions and characteristic features in the response.

Contribution

It introduces a quantum kinetic theory analysis of disorder effects on anomalous Hall response in tilted 3D NLSMs, highlighting the dominance of extrinsic contributions.

Findings

Disorder-driven interband conductivity peaks at low chemical potential.

Tilt induces non-zero intrinsic interband Hall response by breaking inversion symmetry.

Extrinsic disorder effects dominate the overall anomalous Hall response.

Abstract

The anomalous Hall conductivity in the nodal line semimetals (NLSMs) due to the presence of a symmetry-protected nodal ring adds complexity in the investigation of their transport properties. By employing quantum kinetic theory and considering the weak disorder limit, we analyze the intraband and interband parts of anomalous Hall conductivity in the tilted 3D Dirac NLSMs. Our findings reveal that the net anomalous response is mainly contributed by the interband part. Further, the latter part gives non zero results by breaking inversion symmetry via tilt. We observe that the competition between the tilt and the chemical potential emerges kinks at distinct characteristic frequencies in the intrinsic interband part of the anomalous conductivity. On the other hand, the disorder driven interband component of the conductivity exhibits a prominent peak at low chemical potential, followed by a sign change. Notably, the disorder or extrinsic contribution to the response dominates over the intrinsic interband contribution, making it a crucial factor for the study of the overall response of a three-dimensional system.