Interatomic correlation moments and mean square relative displacements in an anharmonic crystal with the face-centered cubic lattice

Using the correlative method of unsymmetrized self-consistent field we study the dynamical properties of anharmonic crystals, namely, the quadratic correlations between atomic displacements from the equilibrium positions and their mean square relative displacements in anharmonic crystals. In the present paper we calculate these values for a weakly anharmonic crystals with the face-centered cubic lattice in which the nearest neighbors interact. The second order of the method enables one to calculate for this lat-tice the correlations between the nearest, second, third and fourth neighbors. The results are compared with those obtained previously for simplified models. The dependence on the coordination number and on the dimensionality of the lattice is discussed. © World Scientific Publishing Company.

Авторы
Zubov V.I. 1, 2 , Pascual M.F.1 , Rodrigues C.G.1
Редакторы
-
Издательство
World Scientific Publishing Co. Pte Ltd
Номер выпуска
21
Язык
Английский
Страницы
1043-1051
Статус
Опубликовано
Подразделение
-
Номер
-
Том
10
Год
1996
Организации
  • 1 Depto. de Física, Universidade Federal de Goiás, C.P.131, 74001-970, Goiânia, GO, Brazil
  • 2 Dept. of Theoretical Physics, Peoples' Friendship University, 117198, Moscow, Russian Federation
Ключевые слова
-
Дата создания
19.10.2018
Дата изменения
19.10.2018
Постоянная ссылка
https://repository.rudn.ru/ru/records/article/record/805/