Charge-density Waves Survive the Pauli Paramagnetic Limit

TL;DR

This study demonstrates that charge-density waves in (Per)$_2$Au(mnt)$_2$ persist beyond the Pauli paramagnetic limit, indicating an inhomogeneous phase similar to that in superconductors at high magnetic fields.

Contribution

It provides experimental evidence that charge-density waves can survive beyond the Pauli limit, suggesting a new phase transition in high magnetic fields.

Findings

Charge-density waves persist above 37 T magnetic field.

Non-linear electrodynamics observed beyond the Pauli limit.

Indication of an inhomogeneous phase similar to superconductors.

Abstract

Measurements of the resistance of single crystals of (Per)$_2$Au(mnt)$_2$ have been made at magnetic fields $B$ of up to 45 T, exceeding the Pauli paramagnetic limit of $B_{\rm P}\approx 37$ T. The continued presence of non-linear charge-density wave electrodynamics at $B \geq 37$ T unambiguously establishes the survival of the charge-density wave state above the Pauli paramagnetic limit, and the likely emergence of an inhomogeneous phase analogous to that anticipated to occur in superconductors.