Recent Advances in the Stability and Properties of Commensurate Flux Phases
Recent progress in flux phases is reviewed. First numerical evidence favors a conjecture, due to Wiegmann, that a state with a flux per plaquette equal to the electron density has the lowest energy for a n.n. tightbinding model on a square lattice. The t — J model is examined using a renormalized mean field theory and shown to have an instability towards flux phases at large enough J/t. These flux states have a collective gauge variable and exhibit superconducting properties.
KeywordsFlux State Correlate Motion Bloch State Flux Phase Spin Liquid State
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- 1.Y. Hasegawa, P. Lederer, T.M. Rice and P. Wiegmann, ETH-preprint (1989).Google Scholar
- 2.P. Lederer, D. Poilblanc and T.M. Rice, ETH-preprint (1989).Google Scholar
- 7.P.W. Anderson, Science 235, 1196 (1987) and in “Frontiers and Borderlines in Many Body Physics”, Varenna Lectures, ed. R.A. Broglia and J.R. Schrieffer, North-Holland (1988).Google Scholar
- 9.P.W. Anderson, B.S. Shastry and D. Hristopoulos, Princeton-preprint (1989) P.W. Anderson, Cargèse Lecture Notes (1988).Google Scholar
- 12.X.G. Wen, F. Wilczek and A. Zee, ITP-preprint (1988).Google Scholar
- 14.D. Poilblanc, ETH-preprint (1989).Google Scholar