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dc.contributor.author |
Derzhko, O. |
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dc.contributor.author |
Richter, J. |
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Krupnitska, O. |
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Krokhmalskii, T. |
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dc.date.accessioned |
2017-06-07T08:10:09Z |
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dc.date.available |
2017-06-07T08:10:09Z |
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dc.date.issued |
2014 |
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dc.identifier.citation |
The square-kagome quantum Heisenberg antiferromagnet at high magnetic fields: the localized-magnon paradigm and beyond / O. Derzhko, J. Richter, O. Krupnitska, T. Krokhmalskii // Физика низких температур. — 2014. — Т. 40, № 6. — С. 662-670. — Бібліогр.: 43 назв. — англ. |
uk_UA |
dc.identifier.issn |
0132-6414 |
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dc.identifier.other |
PACS 75.10.Jm |
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dc.identifier.uri |
http://dspace.nbuv.gov.ua/handle/123456789/119527 |
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dc.description.abstract |
We consider the spin-1/2 antiferromagnetic Heisenberg model on the two-dimensional square-kagome lattice with almost dispersionless lowest magnon band. For a general exchange coupling geometry we elaborate low-energy effective Hamiltonians which emerge at high magnetic fields. The effective model to describe the low-energy degrees of freedom of the initial frustrated quantum spin model is the (unfrustrated) square-lattice spin-1/2 XXZ model in a z-aligned magnetic field. For the effective model we perform quantum Monte Carlo simulations to discuss the low-temperature properties of the square-kagome quantum Heisenberg antiferromagnet at high magnetic fields. We pay special attention to a magnetic-field driven Berezinskii–Kosterlitz– Thouless phase transition which occurs at low temperatures. |
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dc.language.iso |
en |
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dc.publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
uk_UA |
dc.relation.ispartof |
Физика низких температур |
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dc.subject |
Низкотемпеpатуpный магнетизм |
uk_UA |
dc.title |
The square-kagome quantum Heisenberg antiferromagnet at high magnetic fields: the localized-magnon paradigm and beyond |
uk_UA |
dc.type |
Article |
uk_UA |
dc.status |
published earlier |
uk_UA |
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