Delocalization of two-particle ring near Fermi level of 2d Anderson model

Authors
Lages, J Shepelyansky, DL
Citation
J. Lages et Dl. Shepelyansky, Delocalization of two-particle ring near Fermi level of 2d Anderson model, EUR PHY J B, 21(1), 2001, pp. 129-133
Citations number
20
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
EUROPEAN PHYSICAL JOURNAL B
ISSN journal
14346028 → ACNP
Volume
21
Issue
1
Year of publication
2001
Pages
129 - 133
Database
ISI
SICI code
1434-6028(200105)21:1<129:DOTRNF>2.0.ZU;2-V
Abstract
We study analytically and numerically the problem of two particles with a l ong range attractive interaction on a two-dimensional (2d) lattice with dis order. It is shown that below some critical disorder the interaction create s delocalized coupled states near the Fermi level. These states appear insi de well localized noninteracting phase and have a form of two-particle ring which diffusively propagates over the lattice.