Superconductivity and antiferromagnetism as interfering orders in organic conductors

TL;DR

This paper explores how superconductivity and antiferromagnetism interfere in organic conductors, particularly in Bechgaard salts, using weak coupling renormalization group theory to connect experimental observations with theoretical models.

Contribution

It introduces a theoretical framework based on weak coupling renormalization group theory to explain the interference between superconductivity and antiferromagnetism in organic conductors.

Findings

Superconductivity occurs near spin-density-wave ordering under pressure.

Normal state anomalies relate to the interference of pairing mechanisms.

Theoretical predictions align with experimental data.

Abstract

Superconductivity in the Bechgaard salts series of quasi-one-dimensional organic conductors occurs on the verge of spin-density-wave ordering when hydrostatic pressure is applied. The sequence of instabilities is intimately connected to normal state anomalies in various quantities like the temperature dependence of electrical transport and nuclear spin-lattice relaxation rate. We discuss how such a connection takes its origin in the interference between the different pairing mechanisms responsible for antiferromagnetism and superconductivity, a duo that can be comprehended in terms of a weak coupling renormalization group theory. The recent developments along this line of though are presented in relation to experiments.