Phase transitions in pseudospin- electron model with direct interaction between pseudospins
The analysis of thermodynamic properties of the pseudospin-electron model in the case of zero electron transfer with the inclusion of the direct pseudospin-pseudospin interaction of ferroelectric type is performed. The equilibrium conditions in the regimes µ = const and n = const are investigate...
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| Date: | 1999 |
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| Main Authors: | , |
| Format: | Article |
| Language: | English |
| Published: |
Інститут фізики конденсованих систем НАН України
1999
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| Series: | Condensed Matter Physics |
| Online Access: | http://dspace.nbuv.gov.ua/handle/123456789/120543 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Phase transitions in pseudospin- electron model with direct interaction between pseudospins / I.V. Stasyuk, Yu. Havrylyuk // Condensed Matter Physics. — 1999. — Т. 2, № 3(19). — С. 487-494. — Бібліогр.: 9 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Summary: | The analysis of thermodynamic properties of the pseudospin-electron model in the case of zero electron transfer with the inclusion of the direct
pseudospin-pseudospin interaction of ferroelectric type is performed. The
equilibrium conditions in the regimes µ = const and n = const are investigated in the mean field approximation. It is shown that the interaction with
electrons leads at the fixed µ value to the possibility of the first order phase
transition at the change of temperature with a jump-like behaviour of 〈Sz〉.
In the regime n = const there takes place an instability with respect to
phase separation in the wide range of asymmetry parameter h values. |
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