Hole on a stripe in a spinless fermion modelU. Hizi and C. L. Henley
Laboratory of Atomic and Solid State Physics, Cornell University Ithaca, NY, 14853-2501 USA firstname.lastname@example.org
(Received 13 May 2003; accepted in final form 4 November 2003)
In the spinless fermion model on a square lattice with infinite nearest-neighbor repulsion, holes doped into the half-filled ordered state form stripes which, at low doping, are stable against phase separation into an ordered state and a hole-rich metal. Here we consider transport of additional holes along these stripes. The motion of a single hole on a stripe is mapped to a one-dimensional problem, a variational wave function is constructed and the energy spectrum is calculated and compared to energies obtained by exact diagonalization.
71.10.Fd - Lattice fermion models (Hubbard model, etc.).
71.10.Pm - Fermions in reduced dimensions (anyons, composite fermions, Luttinger liquid, etc.).
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