Numerical study of the spin-1 Ashkin-Teller model

Authors
Badehdah, M Bekhechi, S Benyoussef, A Ettaki, B
Citation
M. Badehdah et al., Numerical study of the spin-1 Ashkin-Teller model, PHYS REV B, 59(9), 1999, pp. 6250-6255
Citations number
28
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B-CONDENSED MATTER
ISSN journal
01631829 → ACNP
Volume
59
Issue
9
Year of publication
1999
Pages
6250 - 6255
Database
ISI
SICI code
0163-1829(19990301)59:9<6250:NSOTSA>2.0.ZU;2-9
Abstract
Two nonperturbative methods by means of the transfer-matrix finite-size-sca ling and Monte Carlo simulations are used to investigate the spin-1 Ashkin- Teller model (ATM). We have obtained rich phase diagrams with first- and se cond-order phase transitions with several multicritical points of higher or der. Also this model exhibits a partially ordered phase PO2 which does not exist in the spin-1/2 Ashkin-Teller model (ATM). Finally, the critical beha vior of this model is discussed. [S0163-1829(99)00609-8).