Pseudospin-electron model at weak coupling
The static and dynamic dielectric susceptibility of the pseudospin-electron model is investigated in the random phase approximation. The possibility of the phase transition to the homogeneous phase, to the phase with doubly modulated lattice period and to the incommensurate phase is revealed in...
Збережено в:
| Дата: | 2002 |
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| Автори: | , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Інститут фізики конденсованих систем НАН України
2002
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| Назва видання: | Condensed Matter Physics |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/120669 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Pseudospin-electron model at weak coupling / I.V. Stasyuk, T.S. Mysakovych // Condensed Matter Physics. — 2002. — Т. 5, № 3(31). — С. 473-491. — Бібліогр.: 26 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | The static and dynamic dielectric susceptibility of the pseudospin-electron
model is investigated in the random phase approximation. The possibility
of the phase transition to the homogeneous phase, to the phase with doubly
modulated lattice period and to the incommensurate phase is revealed
in the regime µ = const depending on the value of the chemical potential.
The phase separation on the homogeneous and phase with doubly modulated
lattice period is established and the phase diagrams (n, h) are built.
The influence of the tunnelling-like splitting on the phase transition picture
is studied. The presence of pseudospin-wave excitations and the smooth
excitation spectrum and the possibility of their superimposing are revealed |
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