Localized-magnon states in strongly frustrated quantum spin lattices
Recent developments concerning localized-magnon eigenstates in strongly frustrated spin lattices and their effect on the low-temperature physics of these systems in high magnetic fields are reviewed. After illustrating the construction and the properties of localized-magnon states we describe the...
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| Datum: | 2005 |
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| 1. Verfasser: | |
| Format: | Artikel |
| Sprache: | English |
| Veröffentlicht: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2005
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| Schriftenreihe: | Физика низких температур |
| Schlagworte: | |
| Online Zugang: | https://nasplib.isofts.kiev.ua/handle/123456789/121688 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Localized-magnon states in strongly frustrated quantum spin lattices / J. Richter // Физика низких температур. — 2005. — Т. 31, № 8-9. — С. 918-928. — Бібліогр.: 67 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Zusammenfassung: | Recent developments concerning localized-magnon eigenstates in strongly frustrated spin lattices
and their effect on the low-temperature physics of these systems in high magnetic fields are
reviewed. After illustrating the construction and the properties of localized-magnon states we describe
the plateau and the jump in the magnetization process caused by these states. Considering
appropriate lattice deformations fitting to the localized magnons we discuss a spin-Peierls instability
in high magnetic fields related to these states. Last but not least we consider the degeneracy of
the localized-magnon eigenstates and the related thermodynamics in high magnetic fields. In particular,
we discuss the low-temperature maximum in the isothermal entropy versus field curve and
the resulting enhanced magnetocaloric effect, which allows efficient magnetic cooling from quite
large temperatures down to very low ones. |
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