Heat capacity and spin susceptibility of two-dimensional t–J model
Thermodynamic properties of the t–J model on square and triangular lattices near half-filling are investigated theoretically within an analytical approach based on the Kondo and Yamaji’s Green function decoupling scheme. The temperature dependences of the heat capacity and spin susceptibility are...
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| Veröffentlicht in: | Физика низких температур |
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| Datum: | 2007 |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2007
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| Zitieren: | Heat capacity and spin susceptibility of two-dimensional t–J model / T.N. Antsygina, M.I. Poltavskaya, I.I. Poltavsky, K.A. Chishko // Физика низких температур. — 2007. — Т. 33, № 6-7. — С. 814-819. — Бібліогр.: 14 назв. — англ. |
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Antsygina, T.N. Poltavskaya, M.I. Poltavsky, I.I. Chishko, K.A. 2017-06-16T08:17:39Z 2017-06-16T08:17:39Z 2007 Heat capacity and spin susceptibility of two-dimensional t–J model / T.N. Antsygina, M.I. Poltavskaya, I.I. Poltavsky, K.A. Chishko // Физика низких температур. — 2007. — Т. 33, № 6-7. — С. 814-819. — Бібліогр.: 14 назв. — англ. 0132-6414 PACS: 71.10.Fd; 75.40.Cx https://nasplib.isofts.kiev.ua/handle/123456789/121799 Thermodynamic properties of the t–J model on square and triangular lattices near half-filling are investigated theoretically within an analytical approach based on the Kondo and Yamaji’s Green function decoupling scheme. The temperature dependences of the heat capacity and spin susceptibility are calculated in the wide temperature range for the case when the exchange constant J is greater than the hopping amplitude t. It was found, that with the increase of doping from the half-filling, the maximum of the spin susceptibility increases and its position shifts to lower temperatures for both types of lattices. Such behavior is in agreement with the qualitative predictions [E. Dagotto, Rev. Mod. Phys. 66, 763 (1994)]. Heat capacity demonstrates a double peak shape. The high temperature peak associated with the «spin wave-like» excitations shifts to lower temperatures with doping. The low temperature peak appears due to the holes and its height and position depend on both the doping and the ratio t / J . en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Related Topics Heat capacity and spin susceptibility of two-dimensional t–J model Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
Heat capacity and spin susceptibility of two-dimensional t–J model |
| spellingShingle |
Heat capacity and spin susceptibility of two-dimensional t–J model Antsygina, T.N. Poltavskaya, M.I. Poltavsky, I.I. Chishko, K.A. Related Topics |
| title_short |
Heat capacity and spin susceptibility of two-dimensional t–J model |
| title_full |
Heat capacity and spin susceptibility of two-dimensional t–J model |
| title_fullStr |
Heat capacity and spin susceptibility of two-dimensional t–J model |
| title_full_unstemmed |
Heat capacity and spin susceptibility of two-dimensional t–J model |
| title_sort |
heat capacity and spin susceptibility of two-dimensional t–j model |
| author |
Antsygina, T.N. Poltavskaya, M.I. Poltavsky, I.I. Chishko, K.A. |
| author_facet |
Antsygina, T.N. Poltavskaya, M.I. Poltavsky, I.I. Chishko, K.A. |
| topic |
Related Topics |
| topic_facet |
Related Topics |
| publishDate |
2007 |
| language |
English |
| container_title |
Физика низких температур |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| format |
Article |
| description |
Thermodynamic properties of the t–J model on square and triangular lattices near half-filling are investigated
theoretically within an analytical approach based on the Kondo and Yamaji’s Green function decoupling
scheme. The temperature dependences of the heat capacity and spin susceptibility are calculated in the wide
temperature range for the case when the exchange constant J is greater than the hopping amplitude t. It was
found, that with the increase of doping from the half-filling, the maximum of the spin susceptibility increases
and its position shifts to lower temperatures for both types of lattices. Such behavior is in agreement with the
qualitative predictions [E. Dagotto, Rev. Mod. Phys. 66, 763 (1994)]. Heat capacity demonstrates a double
peak shape. The high temperature peak associated with the «spin wave-like» excitations shifts to lower temperatures
with doping. The low temperature peak appears due to the holes and its height and position depend
on both the doping and the ratio t / J .
|
| issn |
0132-6414 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/121799 |
| citation_txt |
Heat capacity and spin susceptibility of two-dimensional t–J model / T.N. Antsygina, M.I. Poltavskaya, I.I. Poltavsky, K.A. Chishko // Физика низких температур. — 2007. — Т. 33, № 6-7. — С. 814-819. — Бібліогр.: 14 назв. — англ. |
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| first_indexed |
2025-12-07T18:34:28Z |
| last_indexed |
2025-12-07T18:34:28Z |
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