Collective dynamics of simple liquids: A mode-coupling description
We use the mode-coupling theory (MCT), which has been highly successful in accounting for the anomalous relaxation behaviour near the liquid-to-glass transition, for describing the dynamics of monatomic (i.e. simple) liquids away from the glass formation regime. We find that the dynamical structur...
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| Дата: | 2008 |
|---|---|
| Автори: | , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Інститут фізики конденсованих систем НАН України
2008
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| Назва видання: | Condensed Matter Physics |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/119002 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Collective dynamics of simple liquids: A mode-coupling description / W. Schirmacher, H. Sinn // Condensed Matter Physics. — 2008. — Т. 11, № 1(53). — С. 127-137. — Бібліогр.: 31 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
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irk-123456789-1190022017-06-04T03:03:05Z Collective dynamics of simple liquids: A mode-coupling description Schirmacher, W. Sinn, H. We use the mode-coupling theory (MCT), which has been highly successful in accounting for the anomalous relaxation behaviour near the liquid-to-glass transition, for describing the dynamics of monatomic (i.e. simple) liquids away from the glass formation regime. We find that the dynamical structure factor predicted by MCT compares well to experimental findings and results of computer simulations. The memory function exhibits a two-step decay as found frequently in experimental and simulation data. The long-time relaxation regime, in which the relaxation rate strongly depends on the density and is identified as the α relaxation. At high density this process leads the glass instability. The short-time relaxation rate is fairly independent of density. Ми використовуємо теорiю взаємодiючих мод (ТВМ), що була надзвичайно успiшною у врахуваннi аномальної релаксацiйної поведiнки поблизу переходу рiдина-скло, для опису динамiки простих (моноатомних) рiдин далеко вiд режиму формування скла. Ми виявили, що динамiчний структурний фактор, передбачений з ТВМ, добре узгоджується з експериментальними даними та результатами комп’ютерного моделювання. Функцiя пам’ятi проявляє двоступеневий спад, що часто отримується з експериментальних та комп’ютерних даних. Режим довгочасової релаксацiї, в якому швидкiсть релаксацiї сильно залежить вiд густини, iдентифiкується як релаксацiя. При високiй густинi цей процес приводить до нестабiльностi з утворенням скла. Короткочасовий спад релаксацiї майже не залежить вiд густини. 2008 Article Collective dynamics of simple liquids: A mode-coupling description / W. Schirmacher, H. Sinn // Condensed Matter Physics. — 2008. — Т. 11, № 1(53). — С. 127-137. — Бібліогр.: 31 назв. — англ. 1607-324X PACS: 62.60.+V, 66.20.-d DOI:10.5488/CMP.11.1.127 http://dspace.nbuv.gov.ua/handle/123456789/119002 en Condensed Matter Physics Інститут фізики конденсованих систем НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| description |
We use the mode-coupling theory (MCT), which has been highly successful in accounting for the anomalous
relaxation behaviour near the liquid-to-glass transition, for describing the dynamics of monatomic (i.e. simple)
liquids away from the glass formation regime. We find that the dynamical structure factor predicted by MCT
compares well to experimental findings and results of computer simulations. The memory function exhibits a
two-step decay as found frequently in experimental and simulation data. The long-time relaxation regime, in
which the relaxation rate strongly depends on the density and is identified as the α relaxation. At high density
this process leads the glass instability. The short-time relaxation rate is fairly independent of density. |
| format |
Article |
| author |
Schirmacher, W. Sinn, H. |
| spellingShingle |
Schirmacher, W. Sinn, H. Collective dynamics of simple liquids: A mode-coupling description Condensed Matter Physics |
| author_facet |
Schirmacher, W. Sinn, H. |
| author_sort |
Schirmacher, W. |
| title |
Collective dynamics of simple liquids: A mode-coupling description |
| title_short |
Collective dynamics of simple liquids: A mode-coupling description |
| title_full |
Collective dynamics of simple liquids: A mode-coupling description |
| title_fullStr |
Collective dynamics of simple liquids: A mode-coupling description |
| title_full_unstemmed |
Collective dynamics of simple liquids: A mode-coupling description |
| title_sort |
collective dynamics of simple liquids: a mode-coupling description |
| publisher |
Інститут фізики конденсованих систем НАН України |
| publishDate |
2008 |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/119002 |
| citation_txt |
Collective dynamics of simple liquids: A mode-coupling description / W. Schirmacher, H. Sinn // Condensed Matter Physics. — 2008. — Т. 11, № 1(53). — С. 127-137. — Бібліогр.: 31 назв. — англ. |
| series |
Condensed Matter Physics |
| work_keys_str_mv |
AT schirmacherw collectivedynamicsofsimpleliquidsamodecouplingdescription AT sinnh collectivedynamicsofsimpleliquidsamodecouplingdescription |
| first_indexed |
2023-10-18T20:33:34Z |
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2023-10-18T20:33:34Z |
| _version_ |
1796150514533007360 |