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Mott Insulators, No-Double-Occupancy, and Non-Abelian Superconductivity

Mike Guidry·Yang Sun·Cheng-Li Wu
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Abstract

SU(4) dynamical symmetry is shown to imply a no-double-occupancy constraint on the minimal symmetry description of antiferromagnetism and d-wave superconductivity. This implies a maximum doping fraction of 1/4 for cuprates and provides a microscopic critique of the projected SO(5) model. We propose that SU(4) superconductors are representative of a class of compounds that we term non-abelian superconductors. We further suggest that non-abelian superconductors may exist having SU(4) symmetry and therefore cuprate-like dynamics, but without d-wave hybridization.

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Mike Guidry, Yang Sun, Cheng-Li Wu. 2003-09-09. Mott Insulators, No-Double-Occupancy, and Non-Abelian Superconductivity. https://doi.org/10.1103/physrevb.70.184501

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