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2014 | 12 | 5 | 375-382
Tytuł artykułu

Numerical study of the three-state Ashkin-Teller model with competing dynamics

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
An open ferromagnetic Ashkin-Teller model with spin variables 0, ±1 is studied by standard Monte Carlo simulations on a square lattice in the presence of competing Glauber and Kawasaki dynamics. The Kawasaki dynamics simulates spin-exchange processes that continuously flow energy into the system from an external source. Our calculations reveal the presence, in the model, of tricritical points where first order and second order transition lines meet. Beyond that, several self-organized phases are detected when Kawasaki dynamics become dominant. Phase diagrams that comprise phase boundaries and stationary states have been determined in the model parameters’ space. In the case where spin-phonon interactions are incorporated in the model Hamiltonian, numerical results indicate that the paramagnetic phase is stabilized and almost all of the self-organized phases are destroyed.
Wydawca
Czasopismo
Rocznik
Tom
12
Numer
5
Strony
375-382
Opis fizyczny
Daty
wydano
2014-05-01
online
2014-05-08
Twórcy
  • Département de Physique (FAST) et Institut de Mathématiques et de Sciences Physiques (IMSP), Université d’Abomey-Calavi, 01 BP 613, Porto-Novo, Benin
  • Département de Physique (FAST) et Institut de Mathématiques et de Sciences Physiques (IMSP), Université d’Abomey-Calavi, 01 BP 613, Porto-Novo, Benin , fhontinfinde@yahoo.fr
  • Département de Physique (FAST) et Institut de Mathématiques et de Sciences Physiques (IMSP), Université d’Abomey-Calavi, 01 BP 613, Porto-Novo, Benin
  • Laboratoire de Physique Théorique, Département de Physique, Université Abou Bakr Belkaid, Tlemcen, Algérie
Bibliografia
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  • [9] K. Kawasaki, In Phase Transition and Critical Phenomena, edited by C. Domb, M. S. Green (Academic Press, London 1972), vol. 2.
  • [10] R. J. Glauber, J. Phys. 4, 294 (1963)
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  • [12] S. Bekhechi, A. Benyoussef, B. Ettaki, M. Loulidi, A. El Kenz, F. Hontinfinde, Phys. Rev. E 64, 016134 (2001) http://dx.doi.org/10.1103/PhysRevE.64.016134[Crossref]
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11534-014-0446-y
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