Localized-magnon states in strongly frustrated quantum spin lattices

dc.contributor.author	Richter, J.
dc.date.accessioned	2017-06-15T13:05:41Z
dc.date.available	2017-06-15T13:05:41Z
dc.date.issued	2005
dc.identifier.citation	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.	uk_UA
dc.identifier.issn	0132-6414
dc.identifier.other	PACS: 75.10.Jm, 75.45.+j, 75.60.Ej, 75.50.Ee
dc.identifier.uri	http://dspace.nbuv.gov.ua/handle/123456789/121688
dc.description.abstract	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.	uk_UA
dc.description.sponsorship	The author is indebted to O. Derzhko, A. Honecker, H.-J. Schmidt, J. Schnack, and J. Schulenburg for the fruitful collaboration in the field of localized-magnon states in frustrated antiferromagnets. Most of the results discussed in the paper are based on common publications with these colleagues. In particular, I thank J. Schulenburg for many valuable discussions and hints. Furthermore I thank H. Frahm for directing my attention to the flat-band ferromagnetism. I also acknowledge the support from the Deutsche Forschungsgemeinschaft (project No. Ri615/12-1).	uk_UA
dc.language.iso	en	uk_UA
dc.publisher	Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України	uk_UA
dc.relation.ispartof	Физика низких температур
dc.subject	К семидесятилетию антиферромагнетизма	uk_UA
dc.title	Localized-magnon states in strongly frustrated quantum spin lattices	uk_UA
dc.type	Article	uk_UA
dc.status	published earlier	uk_UA