Rapid suppression of charge density wave transition in LaSb2 under pressure

TL;DR

This study demonstrates that applying pressure rapidly suppresses the charge density wave transition in LaSb2, revealing its high pressure sensitivity and tunability, with significant changes in electronic properties.

Contribution

It provides the first detailed pressure-dependent resistivity measurements showing rapid suppression of CDW in LaSb2, highlighting its potential for tunable electronic phases.

Findings

Charge density wave transition is suppressed at 6-7 kbar.

Significant increase in Fermi surface gapping under pressure.

Transition hysteresis persists just above ambient pressure.

Abstract

LaSb2 is found to be an example of an exceptionally pressure sensitive and tunable, two dimensional compound. In-plane electrical resistivity of LaSb2 under pressure up to 12.9 kbar was measured in zero and applied magnetic field. The charge density wave transition (observed at ~ 350 K at ambient pressure) is completely suppressed by 6-7 kbar with significant (in comparison with the ambient pressure) increase in Fermi surface gapping and transition hysteresis just above ambient pressure.