arXiv:cond-mat/9903150·v2·Superconductivity

An SU(4) Approach of High-Temperature Superconductivity and Antiferromagnetism

Mike Guidry (University of Tennessee) · Lian-Ao Wu (Jilin University) · Yang Sun (University of Tennessee) · Cheng-Li Wu (Chung-Yuan Christian University)

PDF arXiv

Abstract

We present an SU(4) model of high- $T_{c}$ superconductivity. One dynamical symmetry of this model corresponds to the previously proposed SO(5) model for unification of superconductivity and antiferromagnetism, but there are two additional dynamical symmetries: SO(4), associated with antiferromagnetic order and SU(2), associated with a D-wave pairing condensate. These provide a 3-phase microscopic model of high- $T_{c}$ superconductivity and permit a clear understanding of the role played by the SO(5) symmetry.

Comments: 4 pages, 2 figures, submitted to Phys. Rev. Lett