Quantum phase transition: Van Vleck antiferromagnet in a magnetic field
Theoretical description of magnetic properties of antiferromagnetic state, induced by the longitudinal magnetic eld, in the Van Vleck singlet magnet with single-ion anisotropy of easy-plane type and ion spin S = 1 is proposed. It is shown that the quantum phase transition to the antiferroma...
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| Дата: | 2008 |
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| Автори: | , , , |
| Формат: | Стаття |
| Мова: | English |
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Інститут фізики конденсованих систем НАН України
2008
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| Назва видання: | Condensed Matter Physics |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/119337 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Quantum phase transition: Van Vleck antiferromagnet in a magnetic field / I.M. Ivanova, V.M. Kalita, V.O. Pashkov, V.M. Loktev // Condensed Matter Physics. — 2008. — Т. 11, № 3(55). — С. 509-522. — Бібліогр.: 42 назв. — англ. |
Репозитарії
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irk-123456789-1193372017-06-07T03:02:34Z Quantum phase transition: Van Vleck antiferromagnet in a magnetic field Ivanova, I.M. Kalita, V.M. Pashkov, V.O. Loktev, V.M. Theoretical description of magnetic properties of antiferromagnetic state, induced by the longitudinal magnetic eld, in the Van Vleck singlet magnet with single-ion anisotropy of easy-plane type and ion spin S = 1 is proposed. It is shown that the quantum phase transition to the antiferromagnetic state is connected with the spontaneous appearance of spin polarization in the easy plane. Spin polarization of the ground nondegenerated state proves to be the order parameter of such a transition and the Landau thermodynamic approach can be employed for its (transition) description. The magnetic properties which include the eld behavior of magnetization and magnetic susceptibility of the antiferromagnetic phase in the elds of different directions are studied. An attempt is made to qualitatively compare the obtained results with the available experimental data. Проведено теоретичний опис iндукованого магнiтним полем квантового фазового переходу у антиферомагнiтий стан у ван-флекiвському антиферомагнетику з легкоплощинним типом однойонної анiзотропiї i величиною спiнiв магнiтних йонiв S = 1. Показано, що при магнiтному фазовому переходi параметром порядку є величина спiнової поляризацiї основного стану, а для опису цього переходу застосовна термодинамiчна теорiя фазових переходiв Ландау. Вивченi магнiтнi властивостi iндукованої магнiтним полем антиферомагнiтної фази, проаналiзованi польовi залежностi намагнiченостi i магнiтної сприйнятливостi. Зроблена спроба якiсного порiвняння отриманих результатiв з наявними експериментальними даними. 2008 Article Quantum phase transition: Van Vleck antiferromagnet in a magnetic field / I.M. Ivanova, V.M. Kalita, V.O. Pashkov, V.M. Loktev // Condensed Matter Physics. — 2008. — Т. 11, № 3(55). — С. 509-522. — Бібліогр.: 42 назв. — англ. 1607-324X PACS: 75.10.-b, 75.10.Jm, 75.30.Gw, 75.30.Kz, 75.50.Ee DOI:10.5488/CMP.11.3.509 http://dspace.nbuv.gov.ua/handle/123456789/119337 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 |
Theoretical description of magnetic properties of antiferromagnetic state, induced by the longitudinal magnetic
eld, in the Van Vleck singlet magnet with single-ion anisotropy of easy-plane type and ion spin S = 1
is proposed. It is shown that the quantum phase transition to the antiferromagnetic state is connected with
the spontaneous appearance of spin polarization in the easy plane. Spin polarization of the ground nondegenerated
state proves to be the order parameter of such a transition and the Landau thermodynamic
approach can be employed for its (transition) description. The magnetic properties which include the eld
behavior of magnetization and magnetic susceptibility of the antiferromagnetic phase in the elds of different
directions are studied. An attempt is made to qualitatively compare the obtained results with the available
experimental data. |
| format |
Article |
| author |
Ivanova, I.M. Kalita, V.M. Pashkov, V.O. Loktev, V.M. |
| spellingShingle |
Ivanova, I.M. Kalita, V.M. Pashkov, V.O. Loktev, V.M. Quantum phase transition: Van Vleck antiferromagnet in a magnetic field Condensed Matter Physics |
| author_facet |
Ivanova, I.M. Kalita, V.M. Pashkov, V.O. Loktev, V.M. |
| author_sort |
Ivanova, I.M. |
| title |
Quantum phase transition: Van Vleck antiferromagnet in a magnetic field |
| title_short |
Quantum phase transition: Van Vleck antiferromagnet in a magnetic field |
| title_full |
Quantum phase transition: Van Vleck antiferromagnet in a magnetic field |
| title_fullStr |
Quantum phase transition: Van Vleck antiferromagnet in a magnetic field |
| title_full_unstemmed |
Quantum phase transition: Van Vleck antiferromagnet in a magnetic field |
| title_sort |
quantum phase transition: van vleck antiferromagnet in a magnetic field |
| publisher |
Інститут фізики конденсованих систем НАН України |
| publishDate |
2008 |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/119337 |
| citation_txt |
Quantum phase transition: Van Vleck antiferromagnet in a magnetic field / I.M. Ivanova, V.M. Kalita, V.O. Pashkov, V.M. Loktev // Condensed Matter Physics. — 2008. — Т. 11, № 3(55). — С. 509-522. — Бібліогр.: 42 назв. — англ. |
| series |
Condensed Matter Physics |
| work_keys_str_mv |
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| first_indexed |
2023-10-18T20:34:19Z |
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2023-10-18T20:34:19Z |
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