Pseudospin-electron model in the self-consistent gaussian fluctuation approximation
Pseudospin-electron model with an effective many-body interaction between pseudospins via conducting electrons is investigated within the generalized random phase approximation scheme with the self-consistent inclusion of mean field type contributions (coming from the effective pseudospin intera...
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| Date: | 2001 |
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| Main Authors: | , |
| Format: | Article |
| Language: | English |
| Published: |
Інститут фізики конденсованих систем НАН України
2001
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| Series: | Condensed Matter Physics |
| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/119762 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Pseudospin-electron model in the self-consistent gaussian fluctuation approximation / I.V. Stasyuk, K.V. Tabunshchyk // Condensed Matter Physics. — 2001. — Т. 4, № 1(25). — С. 109-118. — Бібліогр.: 12 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Summary: | Pseudospin-electron model with an effective many-body interaction between
pseudospins via conducting electrons is investigated within the generalized
random phase approximation scheme with the self-consistent inclusion
of mean field type contributions (coming from the effective pseudospin
interaction) as well as gaussian fluctuations of the mean field (which
makes it possible to obtain more accurate results in the vicinity of the critical
points). Using the approach proposed here, the expressions are obtained
for the pseudospin correlation function, for pseudospin mean value, as well
as for the grand canonical potential. |
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