Specific heat study of magnetic excitations in a one-dimensional S =1 Heisenberg magnet with strong planar anisotropy
The results of experimental studies of the specific heat of the magnetic chain compounds Ni(C₂H₈N₂)₂Ni(CN)₄, Ni(C₁₁H₁₀N₂O)₂Ni(CN)₄, and Ni(C₁₀H₈N₂)₂Ni(CN)₄⋅H₂O are reported. All compounds are identified as S=1 planar Heisenberg magnetic chains with large planar anisotropy and different values of the...
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| Published in: | Физика низких температур |
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| Date: | 2002 |
| Main Authors: | , , , |
| Format: | Article |
| Language: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2002
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/130235 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Specific heat study of magnetic excitations in a one-dimensional S =1 Heisenberg magnet with strong planar anisotropy / A.Feher, M.Orendáč, A.Orendáčová, E.Čižmár // Физика низких температур. — 2002. — Т. 28, № 7. — С. 768-773. — Бібліогр.: 12 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862648116035977216 |
|---|---|
| author | Feher, A. Orendáč, M. Orendáčová, A. Čižmár, E. |
| author_facet | Feher, A. Orendáč, M. Orendáčová, A. Čižmár, E. |
| citation_txt | Specific heat study of magnetic excitations in a one-dimensional S =1 Heisenberg magnet with strong planar anisotropy / A.Feher, M.Orendáč, A.Orendáčová, E.Čižmár // Физика низких температур. — 2002. — Т. 28, № 7. — С. 768-773. — Бібліогр.: 12 назв. — англ. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | The results of experimental studies of the specific heat of the magnetic chain compounds Ni(C₂H₈N₂)₂Ni(CN)₄, Ni(C₁₁H₁₀N₂O)₂Ni(CN)₄, and Ni(C₁₀H₈N₂)₂Ni(CN)₄⋅H₂O are reported. All compounds are identified as S=1 planar Heisenberg magnetic chains with large planar anisotropy and different values of the in-plane anisotropy constant. The low-temperature specific heat data are interpreted assuming the existence of noninteracting excitons and antiexcitons as elementary excitations from the singlet-ground state. The extended strong-coupling model is used for analysis of the data at higher temperatures. The applicability of the models used with respect to the value of the in-plane anisotropy is discussed.
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| first_indexed | 2025-12-01T14:17:40Z |
| format | Article |
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| id | nasplib_isofts_kiev_ua-123456789-130235 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-12-01T14:17:40Z |
| publishDate | 2002 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
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| spelling | Feher, A. Orendáč, M. Orendáčová, A. Čižmár, E. 2018-02-09T10:55:25Z 2018-02-09T10:55:25Z 2002 Specific heat study of magnetic excitations in a one-dimensional S =1 Heisenberg magnet with strong planar anisotropy / A.Feher, M.Orendáč, A.Orendáčová, E.Čižmár // Физика низких температур. — 2002. — Т. 28, № 7. — С. 768-773. — Бібліогр.: 12 назв. — англ. 0132-6414 PACS: 75.40.Cx, 71.20.Be, 75.50.Ee https://nasplib.isofts.kiev.ua/handle/123456789/130235 The results of experimental studies of the specific heat of the magnetic chain compounds Ni(C₂H₈N₂)₂Ni(CN)₄, Ni(C₁₁H₁₀N₂O)₂Ni(CN)₄, and Ni(C₁₀H₈N₂)₂Ni(CN)₄⋅H₂O are reported. All compounds are identified as S=1 planar Heisenberg magnetic chains with large planar anisotropy and different values of the in-plane anisotropy constant. The low-temperature specific heat data are interpreted assuming the existence of noninteracting excitons and antiexcitons as elementary excitations from the singlet-ground state. The extended strong-coupling model is used for analysis of the data at higher temperatures. The applicability of the models used with respect to the value of the in-plane anisotropy is discussed. We are grateful to Prof. V. V. Eremenko for introducing
 our Košice group to the wonderful world
 of low-dimensional magnetism many years ago.
 One of us (A. F.) acknowledges the hospitality of
 CRTBT CNRS Grenoble during the preparation of
 this manuscript. Partial financial support for this
 work was provided by the grant No. 1/7473/20
 from the Slovak Ministry of Education. The material
 support of U. S. Steel DZ Energetika is gratefully
 acknowledged. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Сильно коррелированные системы и высокотемпературная сверхпроводимость Specific heat study of magnetic excitations in a one-dimensional S =1 Heisenberg magnet with strong planar anisotropy Article published earlier |
| spellingShingle | Specific heat study of magnetic excitations in a one-dimensional S =1 Heisenberg magnet with strong planar anisotropy Feher, A. Orendáč, M. Orendáčová, A. Čižmár, E. Сильно коррелированные системы и высокотемпературная сверхпроводимость |
| title | Specific heat study of magnetic excitations in a one-dimensional S =1 Heisenberg magnet with strong planar anisotropy |
| title_full | Specific heat study of magnetic excitations in a one-dimensional S =1 Heisenberg magnet with strong planar anisotropy |
| title_fullStr | Specific heat study of magnetic excitations in a one-dimensional S =1 Heisenberg magnet with strong planar anisotropy |
| title_full_unstemmed | Specific heat study of magnetic excitations in a one-dimensional S =1 Heisenberg magnet with strong planar anisotropy |
| title_short | Specific heat study of magnetic excitations in a one-dimensional S =1 Heisenberg magnet with strong planar anisotropy |
| title_sort | specific heat study of magnetic excitations in a one-dimensional s =1 heisenberg magnet with strong planar anisotropy |
| topic | Сильно коррелированные системы и высокотемпературная сверхпроводимость |
| topic_facet | Сильно коррелированные системы и высокотемпературная сверхпроводимость |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/130235 |
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