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Two-dimensional and layered structures in the discrete phi(4) modelстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Savkin V.V., Rubtsov A.N.
- Журнал: Journal of Experimental and Theoretical Physics
- Том: 91
- Номер: 6
- Год издания: 2000
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 1204
- Последняя страница: 1212
- DOI: 10.1134/1.1342887
- Аннотация: The properties of phase transitions in two-dimensional and layered systems are investigated on the basis of a discrete phi (4) model by numerical and analytical methods. The only parameter a of the discrete phi (4) model determines the behavior of the system and makes it possible to investigate phase transitions ranging from transitions of the displacement type (a –> +0) to order-disorder type (a –> +infinity). The behavior of a two-dimensional system is investigated in a wide range of values of the parameter a. The temperature dependences of the squared order parameter eta (2)(T) and the phase transition temperature T-c as a function of the thickness N of the system are obtained for three characteristic values of the parameter a using the Monte Carlo method. The properties of phase transitions in the discrete phi (4) model are investigated on the basis of the mean-field approximation and the independent-mode approximation. The results obtained in the numerical experiments are compared with the analytical approximations. It is shown that the mean-field approximation qualitatively describes the behavior of the phase-transition temperature T-c as a function of the thickness N of the system for a wide range of values of the parameter a, and the independent-mode approximation describes quantitatively, to within 5%, the results of the numerical simulation for small values of a. (C) 2000 MAIK “Nauka/Interperiodica”.
- Добавил в систему: Рубцов Алексей Николаевич