Singlet Stripe Phases in the planar t-J Model

Details Singlet Stripe Phases in the planar t-J Model Singlet Stripe Phases in the planar t-J Model

1994-08-05

arxiv.org/abs/cond-mat/9408024v1

Phys. Rev. B 51, 016456 (1995)

Physics

Condensed Matter

5 pages, uuencoded compressed PostScript file including 5 figures, ETH-TH/9423

Scientific paper

10.1103/PhysRevB.51.16456

The energies of singlet stripe phases in which a plane is broken up into spin liquid ladders by lines of holes, is examined. If the holes were static then patterns containing spin liquids with a finite spin gap are favored. The case of dynamic holes is treated by assembling t-J ladders oriented perpendicular to the stripes. For a wide region around $J/t \approx 1$ the hole-hole correlations in a single ladder are found to be predominantly charge density wave type but an attraction between hole pairs on adjacent ladders leads to a stripe phase. A quantum mechanical melting of the hole lines at smaller $J/t$ values leads to a Bose condensate of hole pairs, i.e. a superconducting phase.

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