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

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

2003-09-09

arxiv.org/abs/cond-mat/0309229v1

Phys.Rev. B70 (2004) 184501

Physics

Condensed Matter

Superconductivity

4 pages, 2 figures

Scientific paper

10.1103/PhysRevB.70.184501

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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