A perspective of superconductivity as multiband phenomena: Cuprate, iron and aromatic systems

TL;DR

This paper provides a theoretical overview of multiband superconductivity across cuprates, iron-based, and aromatic systems, highlighting differences in electronic structures and pairing mechanisms, and discussing future research directions.

Contribution

It offers a comparative analysis of multiband effects in various superconductor classes, emphasizing their electronic structures and pairing mechanisms, which is a novel synthesis.

Findings

Multiband nature is crucial in understanding high-Tc superconductors.

Differences in multiorbits influence electronic structures and pairing.

Future research directions are outlined for each superconductor class.

Abstract

A theoretical overview of the classes of superconductors encompassing (a) high-Tc cuprate, (b) iron-based and (c) aromatic superconductors is given. Emphasis is put on the multiband natures of all the three classes, where the differences in the multiorbits and their manifestations in the electronic structures and pairing are clarified. From these, future directions and prospects are discussed.