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Effective holon-holon interaction in the resonating-valence-bond state

1989; American Physical Society; Volume: 40; Issue: 4 Linguagem: Inglês

10.1103/physrevb.40.2698

1095-3795

Y. R. Wang,

Quantum, superfluid, helium dynamics

The effective holon-holon interaction mediated by the spinon background is derived in the framework of the resonating-valence-bond model. The interaction is present only after the spinons undergo a transition to a spin superfluid state and is attractive for the holon Cooper pairs. The latter property of the holon-holon interaction gives further support to the conjecture that the two-dimensional Hubbard model by itself in the large-U limit could lead to superconductivity.