Interplay of superconductivity and magnetism in a t-t'-J approach to high Tc cuprates

TL;DR

This paper reviews a mechanism linking superconductivity and magnetism in cuprates, using the t-t'-J model to explain key phenomena like the pseudogap, magnetic excitations, and superfluid density.

Contribution

It introduces a unified framework based on the t-t'-J model to explain the interplay of superconductivity and magnetism in high-Tc cuprates.

Findings

Explains pseudogap phenomenology of spectral weight.

Describes hourglass magnetic excitation structure.

Relates magnetic resonance scale to Tc.

Abstract

We review a recently proposed mechanism for superconductivity in hole-doped cuprates exhibiting a strong interplay between pairing and antiferromagnetism. Starting from the t-t'-J model for the CuO planes, we show that this interplay can explain in a unified framework the pseudogap phenomenology of the spectral weight of the hole, the hourglass-like structure of the magnetic excitation, the critical exponent of the superfluid density, the relation between the scale of the magnetic resonance and Tc.