Recent Advances in High-Temperature Superconductivity

TL;DR

This paper reviews recent experimental and theoretical progress in high-temperature superconductivity, highlighting the non-universality of many phenomena and emphasizing the central role of strong correlations and antiferromagnetic interactions.

Contribution

It challenges previous assumptions by showing many phenomena are non-universal and emphasizes the core importance of electronic correlations and antiferromagnetism in cuprates.

Findings

Many phenomena like pairing symmetry and pseudogap are non-universal.

Strong electronic correlation is a universal property.

Antiferromagnetic spin interaction is fundamental across cuprates.

Abstract

Recent experimental and theoretical developments in high-temperature superconductivity are reviewed, and the empirically asymmetric behavior between hole-doped and electron-doped cuprates is contrasted. A number of phenomena previously considered as essential for the formation of cuprate superconductivity, such as the pairing symmetry, pseudogap phenomenon, gapped incommensurate spin fluctuations and charged stripes, are found to be non-universal, and are likely the consequence of competing orders. It is suggested that the only ubiquitous properties among all cuprates are the strong electronic correlation and antiferromagnetic spin interaction in the CuO2 planes.