Hydrodynamic theory of magnets with strong exchange interaction
A microscopic approach to the description of multisublattice magnets with strong exchange interaction is proposed. Low-frequency dynamics of such magnets is characterized by the appearance of an additional dynamical variable, i.e., the orthogonal matrix of rotation, which corresponds to the total br...
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| Дата: | 1997 |
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| Автори: | , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
1997
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| Назва видання: | Физика низких температур |
| Теми: | |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/175709 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Hydrodynamic theory of magnets with strong exchange interaction / A.A. Isayev, M.Yu. Kovalevsky, and S.V. Peletminsky // Физика низких температур. — 1997. — Т. 23, № 7. — С. 696-711. — Бібліогр.: 20 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
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irk-123456789-1757092021-02-03T01:27:12Z Hydrodynamic theory of magnets with strong exchange interaction Isayev, A. A. Kovalevsky, M.Yu. Peletminsky, S.V. Низкотемпеpатуpный магнетизм A microscopic approach to the description of multisublattice magnets with strong exchange interaction is proposed. Low-frequency dynamics of such magnets is characterized by the appearance of an additional dynamical variable, i.e., the orthogonal matrix of rotation, which corresponds to the total breaking of spin invariance [broken SO(3) symmetry]. The structure of the source that breaks the symmetry of the equilibrium Gibbs distribution is established. The quasiaverage representation is generalized to weakly anisotropic, locally equilibrium states. The thermodynamics of such states is constructed. The method of reduced description is formulated and in its framework the hydrodynamic equations for the density of total spin and the matrix of rotation are obtained. The spectra of spin waves are found and the number of Goldstone and activation modes is determined. Two-sublattice ferrimagnet is considered as a special case of the magnet with broken SO(3) symmetry, which corresponds to the special dependence of thermodynamic functions from the matrix of rotation. 1997 Article Hydrodynamic theory of magnets with strong exchange interaction / A.A. Isayev, M.Yu. Kovalevsky, and S.V. Peletminsky // Физика низких температур. — 1997. — Т. 23, № 7. — С. 696-711. — Бібліогр.: 20 назв. — англ. 0132-6414 PACS: 75.10.-b, 75.30.Et, 05.30.Ch http://dspace.nbuv.gov.ua/handle/123456789/175709 en Физика низких температур Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| topic |
Низкотемпеpатуpный магнетизм Низкотемпеpатуpный магнетизм |
| spellingShingle |
Низкотемпеpатуpный магнетизм Низкотемпеpатуpный магнетизм Isayev, A. A. Kovalevsky, M.Yu. Peletminsky, S.V. Hydrodynamic theory of magnets with strong exchange interaction Физика низких температур |
| description |
A microscopic approach to the description of multisublattice magnets with strong exchange interaction is proposed. Low-frequency dynamics of such magnets is characterized by the appearance of an additional dynamical variable, i.e., the orthogonal matrix of rotation, which corresponds to the total breaking of spin invariance [broken SO(3) symmetry]. The structure of the source that breaks the symmetry of the equilibrium Gibbs distribution is established. The quasiaverage representation is generalized to weakly anisotropic, locally equilibrium states. The thermodynamics of such states is constructed. The method of reduced description is formulated and in its framework the hydrodynamic equations for the density of total spin and the matrix of rotation are obtained. The spectra of spin waves are found and the number of Goldstone and activation modes is determined. Two-sublattice ferrimagnet is considered as a special case of the magnet with broken SO(3) symmetry, which corresponds to the special dependence of thermodynamic functions from the matrix of rotation. |
| format |
Article |
| author |
Isayev, A. A. Kovalevsky, M.Yu. Peletminsky, S.V. |
| author_facet |
Isayev, A. A. Kovalevsky, M.Yu. Peletminsky, S.V. |
| author_sort |
Isayev, A. A. |
| title |
Hydrodynamic theory of magnets with strong exchange interaction |
| title_short |
Hydrodynamic theory of magnets with strong exchange interaction |
| title_full |
Hydrodynamic theory of magnets with strong exchange interaction |
| title_fullStr |
Hydrodynamic theory of magnets with strong exchange interaction |
| title_full_unstemmed |
Hydrodynamic theory of magnets with strong exchange interaction |
| title_sort |
hydrodynamic theory of magnets with strong exchange interaction |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| publishDate |
1997 |
| topic_facet |
Низкотемпеpатуpный магнетизм |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/175709 |
| citation_txt |
Hydrodynamic theory of magnets with strong exchange interaction / A.A. Isayev, M.Yu. Kovalevsky, and S.V. Peletminsky // Физика низких температур. — 1997. — Т. 23, № 7. — С. 696-711. — Бібліогр.: 20 назв. — англ. |
| series |
Физика низких температур |
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AT isayevaa hydrodynamictheoryofmagnetswithstrongexchangeinteraction AT kovalevskymyu hydrodynamictheoryofmagnetswithstrongexchangeinteraction AT peletminskysv hydrodynamictheoryofmagnetswithstrongexchangeinteraction |
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2023-10-18T22:39:24Z |
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2023-10-18T22:39:24Z |
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1796156093146071040 |