Anisotropic collective excitations around various charge ordering states

Authors
Mori, M Yonemitsu, K
Citation
M. Mori et K. Yonemitsu, Anisotropic collective excitations around various charge ordering states, J PHYS CH S, 62(1-2), 2001, pp. 409-411
Citations number
17
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
ISSN journal
00223697 → ACNP
Volume
62
Issue
1-2
Year of publication
2001
Pages
409 - 411
Database
ISI
SICI code
0022-3697(200101/02)62:1-2<409:ACEAVC>2.0.ZU;2-R
Abstract
We calculate absorption spectra for various charge ordering (CO) states in the two-dimensional extended Hubbard model at quarter filling with the rand om phase approximation. Each CO state has: its own characteristic and aniso tropic excitations. In principle, these features should be observed in the optical measurements and tell which CO state is realized in the theta-(ET)( 2)X salts. (C) 2000 Elsevier Science Ltd. All rights reserved.