Europhys. Lett.
Volume 65, Number 2, January 2004
Page(s) 228 - 234
Section Condensed matter: electronic structure, electrical, magnetic, and optical properties
Published online 01 January 2004
Europhys. Lett., 65 (2) , pp. 228-234 (2004)
DOI: 10.1209/epl/i2003-10066-6

Hole on a stripe in a spinless fermion model

U. Hizi and C. L. Henley

Laboratory of Atomic and Solid State Physics, Cornell University Ithaca, NY, 14853-2501 USA

(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.).

© EDP Sciences 2004