Organic Superconductors: when correlations and magnetism walk in

TL;DR

This survey reviews the development of organic superconductors since the 1980s, emphasizing the role of correlations and magnetism in their properties, and highlights their significance as prototypes for understanding high-temperature superconductivity.

Contribution

It provides a comprehensive overview of organic superconductivity, connecting experimental findings with theoretical insights into correlations and magnetic fluctuations.

Findings

Correlations govern low-temperature properties of organic conductors.

Antiferromagnetic fluctuations contribute to Cooper pairing.

Organic superconductors serve as prototypes for high Tc materials.

Abstract

This survey provides a brief account for the start of organic superconductivity motivated by the quest for high Tc superconductors and its development since the eighties'. Besides superconductivity found in 1D organics in 1980, progresses in this field of research have contributed to better understand the physics of low dimensional conductors highlighted by the wealth of new remarkable properties. Correlations conspire to govern the low temperature properties of the metallic phase. The contribution of antiferromagnetic fluctuations to the interchain Cooper pairing proposed by the theory is borne out by experimental investigations and supports supercondutivity emerging from a non Fermi liquid background. Quasi one dimensional organic superconductors can therefore be considered as simple prototype systems for the more complex high Tc materials.