Magnetic and thermal properties of a one-dimensional spin-1 model
We study the one-dimensional S = 1 Blume-Emery-Grif ths model. Upon transforming the spin model into an equivalent fermionic model, we provide the exact solution within the Green's function and equations of motion formalism. We show that the relevant response functions as well as thermodynami...
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| Дата: | 2008 |
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| 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/123456789/119381 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Magnetic and thermal properties of a one-dimensional spin-1 model / F. Mancini, F.P. Mancini // Condensed Matter Physics. — 2008. — Т. 11, № 3(55). — С. 543-553. — Бібліогр.: 16 назв. — англ. |
Репозитарії
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irk-123456789-1193812017-06-07T03:03:39Z Magnetic and thermal properties of a one-dimensional spin-1 model Mancini, F. Mancini, F.P. We study the one-dimensional S = 1 Blume-Emery-Grif ths model. Upon transforming the spin model into an equivalent fermionic model, we provide the exact solution within the Green's function and equations of motion formalism. We show that the relevant response functions as well as thermodynamic quantities can be determined, in the whole parameters space, in terms of a nite set of local correlators. Furthermore, considering the case of an antiferromagnetic chain with single-ion anisotropy in the presence of an external magnetic eld, we nd three plateaus in the magnetization curve. In the neighborhood of the endpoints of the intermediate plateau, the speci c heat shows a double peak structure. Дослiджується одновимiрна S = 1 модель Блюма-Емерi-Грiфiтса. Пiсля перетворення спiнової моделi у еквiвалентну фермiонну модель, отримано точний розв’язок в рамках формалiзму функцiй Ґрiна та рiвнянь руху. Показано, що для всiх значень параметрiв вiдповiднi функцiї вiдгуку i термодинамiчнi величини можуть бути визначенi через скiнчений набiр локальних кореляторiв. Крiм того, при розглядi одновимiрного антиферомагнiтного ланцюжка з одноiонною анiзотропiєю, який помiщений у зовнiшнє магнiтне поле, отримано три плато на кривiй намагнiчення, а поблизу країв середнього плато питома теплоємнiсть проявляє двопiкову структуру. 2008 Article Magnetic and thermal properties of a one-dimensional spin-1 model / F. Mancini, F.P. Mancini // Condensed Matter Physics. — 2008. — Т. 11, № 3(55). — С. 543-553. — Бібліогр.: 16 назв. — англ. 1607-324X PACS: 75.10.Pq, 75.10.-b, 75.30.Kz DOI:10.5488/CMP.11.3.543 http://dspace.nbuv.gov.ua/handle/123456789/119381 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 study the one-dimensional S = 1 Blume-Emery-Grif ths model. Upon transforming the spin model into
an equivalent fermionic model, we provide the exact solution within the Green's function and equations of
motion formalism. We show that the relevant response functions as well as thermodynamic quantities can
be determined, in the whole parameters space, in terms of a nite set of local correlators. Furthermore,
considering the case of an antiferromagnetic chain with single-ion anisotropy in the presence of an external
magnetic eld, we nd three plateaus in the magnetization curve. In the neighborhood of the endpoints of the
intermediate plateau, the speci c heat shows a double peak structure. |
| format |
Article |
| author |
Mancini, F. Mancini, F.P. |
| spellingShingle |
Mancini, F. Mancini, F.P. Magnetic and thermal properties of a one-dimensional spin-1 model Condensed Matter Physics |
| author_facet |
Mancini, F. Mancini, F.P. |
| author_sort |
Mancini, F. |
| title |
Magnetic and thermal properties of a one-dimensional spin-1 model |
| title_short |
Magnetic and thermal properties of a one-dimensional spin-1 model |
| title_full |
Magnetic and thermal properties of a one-dimensional spin-1 model |
| title_fullStr |
Magnetic and thermal properties of a one-dimensional spin-1 model |
| title_full_unstemmed |
Magnetic and thermal properties of a one-dimensional spin-1 model |
| title_sort |
magnetic and thermal properties of a one-dimensional spin-1 model |
| publisher |
Інститут фізики конденсованих систем НАН України |
| publishDate |
2008 |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/119381 |
| citation_txt |
Magnetic and thermal properties of a one-dimensional spin-1 model / F. Mancini, F.P. Mancini // Condensed Matter Physics. — 2008. — Т. 11, № 3(55). — С. 543-553. — Бібліогр.: 16 назв. — англ. |
| series |
Condensed Matter Physics |
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2023-10-18T20:34:25Z |
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2023-10-18T20:34:25Z |
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1796150554239434752 |