# Electron scattering in tantalum monoarsenide

## TL;DR

This study investigates electron scattering in TaAs, a Weyl semimetal, revealing how transport properties change near Weyl nodes and supporting the chirality-protected shift theory.

## Contribution

It provides detailed analysis of electron scattering and transport parameters in TaAs, highlighting the enhancement of the transport to quantum lifetime ratio near Weyl nodes.

## Key findings

- Transport lifetime to quantum lifetime ratio increases near Weyl nodes
- Transport parameters are obtained through two-band model fitting and Shubnikov de Haas analysis
- Results support the chirality-protected shift interpretation in Weyl semimetals

## Abstract

We report comprehensive studies of the single crystal growth and electrical transport properties for various samples of TaAs, the first experimentally confirmed inversion symmetry-breaking Weyl semimetal. The transport parameters for different samples are obtained through the fitting of the two band model and the analysis of Shubnikov de Haas oscillations. We find that the ratio factor of transport lifetime to quantum lifetime is intensively enhanced when the Fermi level approaches the Weyl node. This result is consistent with the side-jump interpretation derived from a chirality-protected shift in the scattering process for a Weyl semimetal.