Destruction of density-wave states by a pseudo-gap in high magnetic fields: application to (TMTSF)$_2$ClO$_4$

TL;DR

This paper presents a model explaining how high magnetic fields destroy density-wave states in quasi-one-dimensional organic conductors by inducing a pseudo-gap, aligning with observed behaviors in specific materials.

Contribution

The model accounts for the suppression of density-wave states by magnetic fields through pseudo-gap formation, explaining previously unexplained experimental properties.

Findings

Pseudo-gap develops near the transition temperature under high magnetic fields.

When the pseudo-gap exceeds the mean-field transition temperature, density-wave formation is inhibited.

The model aligns with experimental observations in (TMTSF)$_2$ClO$_4$ and related compounds.

Abstract

A model is presented for the destruction of density-wave states in quasi-one-dimensional crystals by high magnetic fields. The model is consistent with previously unexplained properties of the organic conductors (TMTSF)$_2$ClO$_4$ and (BEDT-TTF)$_2$MHg(SCN)$_4$ (M=K,Rb,Tl). As the magnetic field increases quasi-one-dimensional density-wave fluctuations increase, producing a pseudo-gap in the electronic density of states near the transition temperature. When the pseudo-gap becomes larger than the mean-field transition temperature formation of a density-wave state is not possible.