title: Spinons and holons for the one-dimensional three-band Hubbard models of high-temperature superconductors.
abstract: The one-dimensional three-band Hubbard Hamiltonian is shown to be equivalent to an effective Hamiltonian that has independent spinon and holon quasiparticle excitations plus a weak coupling of the two. The spinon description includes both copper sites and oxygen hole sites leading to a one-dimensional antiferromagnet incommensurate with the copper lattice. The holons are spinless noninteracting fermions in a simple cosine band. Because the oxygen sites are in the Hamiltonian, the quasiparticles are much simpler than in the exact solution of the t-J model for 2t = +/- J. If a similar description is correct for two dimensions, then the holons will attract in a p-wave potential.
authors.affiliation: Materials and Molecular Simulation Center, Beckman Institute, Pasadena, CA 91125, USA.
authors.forename: J
authors.initials: J
authors.lastname: Tahir-Kheli
authors.forename: W A
authors.initials: WA
authors.lastname: Goddard