Interaction of strongly correlated electrons and acoustical phonons
We investigate the interaction of correlated electrons with acoustical phonons using the extended Hubbard–Holstein model. The Lang–Firsov canonical transformation allows one to obtain mobile polarons for which a new diagram technique and generalized Wick’s theorem is used. The physics of emission...
Збережено в:
| Дата: | 2006 |
|---|---|
| Автори: | , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2006
|
| Назва видання: | Физика низких температур |
| Теми: | |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/120196 |
| Теги: |
Додати тег
Немає тегів, Будьте першим, хто поставить тег для цього запису!
|
| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Interaction of strongly correlated electrons and acoustical phonons / V.A. Moskalenko, P. Entel, D.F. Digor // Физика низких температур. — 2006. — Т. 32, № 4-5. — С. 609–633. — Бібліогр.: 34 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
irk-123456789-120196 |
|---|---|
| record_format |
dspace |
| spelling |
irk-123456789-1201962017-06-12T03:04:33Z Interaction of strongly correlated electrons and acoustical phonons Moskalenko, V.A. Entel, P. Digor, D.F. Strong Correlations We investigate the interaction of correlated electrons with acoustical phonons using the extended Hubbard–Holstein model. The Lang–Firsov canonical transformation allows one to obtain mobile polarons for which a new diagram technique and generalized Wick’s theorem is used. The physics of emission and absorption of the collective phonon-field mode by the polarons is discussed in detail. In the strong-coupling limit of the electron-phonon interaction, and in the normal as well as in the superconducting phase, chronological thermodynamical averages of products of acoustical phonon-cloud operators can be expressed by the products of one-cloud operator averages. While the normal one-cloud propagator has the form of a Lorentzian, the anomalous one is of Gaussian form and considerably smaller. We have established the Mott–Hubbard and superconducting phase transitions in this model. 2006 Article Interaction of strongly correlated electrons and acoustical phonons / V.A. Moskalenko, P. Entel, D.F. Digor // Физика низких температур. — 2006. — Т. 32, № 4-5. — С. 609–633. — Бібліогр.: 34 назв. — англ. 0132-6414 PACS: 78.30.Am, 74.72.Dn, 75.30.Gw, 75.50.Ee http://dspace.nbuv.gov.ua/handle/123456789/120196 en Физика низких температур Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| topic |
Strong Correlations Strong Correlations |
| spellingShingle |
Strong Correlations Strong Correlations Moskalenko, V.A. Entel, P. Digor, D.F. Interaction of strongly correlated electrons and acoustical phonons Физика низких температур |
| description |
We investigate the interaction of correlated electrons with acoustical phonons using the extended
Hubbard–Holstein model. The Lang–Firsov canonical transformation allows one to obtain
mobile polarons for which a new diagram technique and generalized Wick’s theorem is used. The
physics of emission and absorption of the collective phonon-field mode by the polarons is discussed
in detail. In the strong-coupling limit of the electron-phonon interaction, and in the normal as
well as in the superconducting phase, chronological thermodynamical averages of products of
acoustical phonon-cloud operators can be expressed by the products of one-cloud operator averages.
While the normal one-cloud propagator has the form of a Lorentzian, the anomalous one is of
Gaussian form and considerably smaller. We have established the Mott–Hubbard and superconducting
phase transitions in this model. |
| format |
Article |
| author |
Moskalenko, V.A. Entel, P. Digor, D.F. |
| author_facet |
Moskalenko, V.A. Entel, P. Digor, D.F. |
| author_sort |
Moskalenko, V.A. |
| title |
Interaction of strongly correlated electrons and acoustical phonons |
| title_short |
Interaction of strongly correlated electrons and acoustical phonons |
| title_full |
Interaction of strongly correlated electrons and acoustical phonons |
| title_fullStr |
Interaction of strongly correlated electrons and acoustical phonons |
| title_full_unstemmed |
Interaction of strongly correlated electrons and acoustical phonons |
| title_sort |
interaction of strongly correlated electrons and acoustical phonons |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| publishDate |
2006 |
| topic_facet |
Strong Correlations |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/120196 |
| citation_txt |
Interaction of strongly correlated electrons
and acoustical phonons / V.A. Moskalenko, P. Entel, D.F. Digor // Физика низких температур. — 2006. — Т. 32, № 4-5. — С. 609–633. — Бібліогр.: 34 назв. — англ. |
| series |
Физика низких температур |
| work_keys_str_mv |
AT moskalenkova interactionofstronglycorrelatedelectronsandacousticalphonons AT entelp interactionofstronglycorrelatedelectronsandacousticalphonons AT digordf interactionofstronglycorrelatedelectronsandacousticalphonons |
| first_indexed |
2023-10-18T20:36:30Z |
| last_indexed |
2023-10-18T20:36:30Z |
| _version_ |
1796150642944770048 |