Conduction Anisotropy, Hall Effect, and Magnetoresistance of (TMTSF)2ReO4 at High Temperatures

TL;DR

This study examines the high-temperature transport properties of (TMTSF)2ReO4, revealing anisotropic conductivity, a small Hall effect, and magnetoresistance, and suggests these can be explained by Fermi liquid theory.

Contribution

It provides a detailed analysis of transport phenomena in (TMTSF)2ReO4 at high temperatures within the Fermi liquid framework, extending understanding of quasi-one-dimensional organic metals.

Findings

Pronounced conductivity anisotropy observed.

Small, smoothly temperature-dependent Hall effect.

Small, positive, temperature-dependent magnetoresistance.

Abstract

We investigated the transport properties of the quasi one-dimensional organic metal (TMTSF)2ReO4 above the anion-ordering metal-insulator transition (T_{AO} \approx 180K). The pronounced conductivity anisotropy, a small and smoothly temperature dependent Hall effect, and a small, positive and temperature dependent magnetoresistance are analyzed within the existing Fermi-liquid and non-Fermi liquid models. We propose that the transport properties of quasi one-dimensional Bechgaard salts at high temperatures can be described within the Fermi liquid description.