Fractionally charged excitations in the charge density wave state of a quarter-filled t-J chain with quantum phonons

Authors
Maurel, P Lepetit, MB Poilblanc, D
Citation
P. Maurel et al., Fractionally charged excitations in the charge density wave state of a quarter-filled t-J chain with quantum phonons, EUR PHY J B, 21(4), 2001, pp. 481-484
Citations number
29
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
EUROPEAN PHYSICAL JOURNAL B
ISSN journal
14346028 → ACNP
Volume
21
Issue
4
Year of publication
2001
Pages
481 - 484
Database
ISI
SICI code
1434-6028(200106)21:4<481:FCEITC>2.0.ZU;2-H
Abstract
Elementary excitations of the 4k(F) charge density wave state of a quarter- filled strongly correlated electronic one-dimensional chain are investigate d in the presence of dispersionless quantum optical phonons using Density M atrix Renormalization Group techniques. Such excitations are shown to be to pological solitons carrying charge e/2 and spin zero. Relevance to the 4kF charge density wave instability in (DI - DCNQI)(2)Ag or recently discovered in (TMTTF)(2)X (X = PF6, AsF6) is discussed.