# Pressure-induced topological phase transition in LaSb: First-principles study

## TL;DR

This study predicts a pressure-induced topological phase transition in LaSb using first-principles calculations, revealing insights into the role of topological properties in extreme magnetoresistance phenomena.

## Contribution

It demonstrates a topological phase transition in LaSb under pressure without symmetry breaking, highlighting the role of topological properties in XMR.

## Key findings

- LaSb undergoes a topological phase transition between 3 and 4 GPa.
- Electron-hole compensation persists across the transition.
- Provides a platform to study topological effects in XMR.

## Abstract

By using first-principles electronic structure calculations, we predict that the extreme magnetoresistance (XMR) material LaSb takes a topological phase transition without breaking any symmetry under a hydrostatic pressure applied between 3 and 4 GPa, meanwhile the electron-hole compensation remains in its electronic band structure. Thus LaSb provides an ideal platform for studying the individual role of topological property playing in the XMR phenomenon, in addition to the electron-hole compensation. This has general implication to the relationship of XMR effect and topological property in topological materials.