Organic Superconductors: Reduced Dimensionality and Correlation Effects

TL;DR

This paper reviews the role of electronic correlations in quasi-one-dimensional organic superconductors, comparing Fermi and Luttinger liquid models to experimental data on Bechgaard salts and their sulfur analogs.

Contribution

It provides a comprehensive tutorial on the applicability of Fermi and Luttinger liquid theories to the normal phase of organic superconductors with reduced dimensionality.

Findings

Experimental evidence supports the relevance of Luttinger liquid behavior in some regimes.

Fermi liquid description remains valid in certain conditions.

The paper clarifies the limits of theoretical models for these materials.

Abstract

In this tutorial we will tackle the problem of electronic correlations in quasi-one-dimensional organic superconductors. We will go through different pieces of experimental evidence showing the range of applicability of the Fermi and Luttinger liquid descriptions of the normal phase of the Bechgaard salts series and their sulfur analogs.