The Quantum Hall Effect in Quasi-1D Conductors

TL;DR

This paper reviews the observation and theoretical explanation of the Quantum Hall effect in quasi-one-dimensional Bechgaard salts, focusing on sign reversals and Fermi surface geometry effects.

Contribution

It provides a comprehensive review of experimental and theoretical insights into the Quantum Hall effect in quasi-1D conductors, highlighting the role of the Quantized Nesting Model.

Findings

Sign reversals are explained by Fermi surface modifications.

Only even phases exhibit sign reversals.

Negative phases are less stable than positive ones.

Abstract

The theory and experiments showing Quantum Hall effect in the quasi-one-dimensional conductors of the Bechgaard salts family are briefly reviewed. The sign reversals observed under some experimental conditions are explained within the framework of the Quantized Nesting Model. The sequence of reversals is driven by slight modifications of the geometry of the Fermi surface. It is explained why only even phases can have sign reversals and why negative phases are less stable than positive ones.