SELF-TRAPPING TRANSITION IN THE GROUND-STATE OF THE HOLSTEIN T-J MODEL

Authors
SABCZYNSKI J SHERMAN A SCHREIBER M
Citation
J. Sabczynski et al., SELF-TRAPPING TRANSITION IN THE GROUND-STATE OF THE HOLSTEIN T-J MODEL, Physics letters. A, 195(3-4), 1994, pp. 231-235
Citations number
29
Categorie Soggetti
Physics
Journal title
Physics letters. A → ACNP
ISSN journal
03759601
Volume
195
Issue
3-4
Year of publication
1994
Pages
231 - 235
Database
ISI
SICI code
0375-9601(1994)195:3-4<231:STITGO>2.0.ZU;2-F
Abstract
We analyze the two-dimensional Holstein t-J model within the spin-wave approximation by means of an iterative Lanczos algorithm to describe the dynamics of holes in CuO2 planes of high-T(c) superconductors. A s harp crossover from nearly free to self-trapped excitations is found a t a finite value of the hole-phonon coupling constant. In the vicinity of this crossing a coexistence of these two types of states and ferro n-phonon complexes is found.