Order parameter for ferromagnetic phase transition in the two-particle magnetic cluster system
Integration is performed over collective variables in the partition function functional of the two-particle magnetic cluster system using the fourth basic measure density. To rigorously consider the Gaussian and the nonGaussian fluctuations of the order parameter when dipole-dipole intercluster...
Збережено в:
| Дата: | 2002 |
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| Автор: | |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Інститут фізики конденсованих систем НАН України
2002
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| Назва видання: | Condensed Matter Physics |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/120684 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Order parameter for ferromagnetic phase transition in the two-particle magnetic cluster system / N.A. Korynevskii // Condensed Matter Physics. — 2002. — Т. 5, № 4(32). — С.625-640. — Бібліогр.: 25 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | Integration is performed over collective variables in the partition function
functional of the two-particle magnetic cluster system using the fourth basic
measure density. To rigorously consider the Gaussian and the nonGaussian
fluctuations of the order parameter when dipole-dipole intercluster
interactions take place, a two stage layer-by-layer method of integration
is applied. To get the equation for the order parameter, the procedure
of minimizing the integrand with the last (corresponding to zero values of
quasimomentum and Matsubara’s frequency) collective variable is used.
Solutions of this equation in the phase transition point neighbourhood are
found. |
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