Phonons and solitons in one-dimensional Mott insulators - art. no. 113406

Authors
Chang, CM Neto, AHC Bishop, AR
Citation
Cm. Chang et al., Phonons and solitons in one-dimensional Mott insulators - art. no. 113406, PHYS REV B, 6411(11), 2001, pp. 3406
Citations number
14
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
01631829 → ACNP
Volume
6411
Issue
11
Year of publication
2001
Database
ISI
SICI code
0163-1829(20010915)6411:11<3406:PASIOM>2.0.ZU;2-S
Abstract
We study the problem of one-dimensional Luttinger liquids in the insulating Mott-Hubbard phase in the presence of acoustic phonons in the semiclassica l limit. We show that solitonic excitations can propagate freely in the sys tem and the energy required to produce a soliton is reduced by a polaronic effect. We find a critical value of the electron-phonon coupling constant f or which this energy vanishes.