Stripes, pseudogaps, and SO(6) in the cuprate superconductors
arXiv:cond-mat/9709137 · doi:10.1016/S0022-3697(98)00093-6
Abstract
We briefly summarize two related calculations. First, we demonstrate that the instabilities (either nesting or pairing) associated with the high-T_c cuprates can be described by an SO(6) transformation group. There are two independent 6-dimensional representations (`superspins'). One superspin combines Zhang's 5-component superspin with a flux phase instability; the other involves a charge density wave, s-wave superconductivity, and an exotic spin current. The second calculation is a self-consistent slave boson calculation, which provides a good description of the doping dependence of the photoemission dispersion in terms of dynamic striped phases. The stripes are stabilized by strong electron-phonon coupling, and provide evidence for a doping-dependent crossover between the two superspin groundstates.
5 pages, 8 figures included as ps files; presented at SNS97 (Spectroscopies in Novel Superconductors), Sept. 14-18, Cape Cod; proceedings to appear in J. Phys. Chem. Sol
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- Pinned Balseiro-Falicov Model of Tunneling and Photoemission in the Cuprates
- Dispersion of Ordered Stripe Phases in the Cuprates
- Temperature-dependent gap equations and their solutions in the SU(4) model of high-temperature superconductivity
- Remnant Fermi Surfaces in Photoemission
- Flux Phase as a Dynamic Jahn-Teller Phase: Berryonic Matter in the Cuprates?
- Role of electronic nematicity in the interplay between s- and d-wave broken-symmetry states