Energy spectrum of the organic quasi-1D conductors with NNN and correlated hopping
A model for organic quasi-one-dimensional conductors (TMTTF)₂X and (TMTSF)₂X is considered. The anisotropic character of these compounds is modelled by two different hopping parameters: t between nearest neighbors (NN) in a chain of tetramethyl-tetrathiafulvalene (TMTTF) or tetramethyl-tetraselenf...
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| Дата: | 2006 |
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| Автори: | , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Інститут фізики конденсованих систем НАН України
2006
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| Назва видання: | Condensed Matter Physics |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/121310 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Energy spectrum of the organic quasi-1D conductors with NNN and correlated hopping / Yu. Skorenkyy, O. Kramar // Condensed Matter Physics. — 2006. — Т. 9, № 1(45). — С. 161–168 . — Бібліогр.: 45 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
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irk-123456789-1213102017-06-15T03:05:19Z Energy spectrum of the organic quasi-1D conductors with NNN and correlated hopping Skorenkyy, Yu. Kramar, O. A model for organic quasi-one-dimensional conductors (TMTTF)₂X and (TMTSF)₂X is considered. The anisotropic character of these compounds is modelled by two different hopping parameters: t between nearest neighbors (NN) in a chain of tetramethyl-tetrathiafulvalene (TMTTF) or tetramethyl-tetraselenfulvalene (TMTSF) molecules and t' between the chains (NNN - between next nearest neighbors). Taking into account the correlated hopping of electrons allows us to describe the effect of site occupancy on hopping processes. In a regime of strong intraatomic correlation, high energy processes are cut off by applying two successive canonical transformations. An effective model is obtained for concentration of electrons n < 1 which contains kinetic exchange terms of antiferromagnetic (AF) nature. Oppositely, NNN hopping and correlated hopping disfavor the AF order. The energy spectrum of the effective model is calculated. Application of the obtained results to quasi-one-dimensional conductors is discussed. 2006 Article Energy spectrum of the organic quasi-1D conductors with NNN and correlated hopping / Yu. Skorenkyy, O. Kramar // Condensed Matter Physics. — 2006. — Т. 9, № 1(45). — С. 161–168 . — Бібліогр.: 45 назв. — англ. 1607-324X PACS: 74.25.-q, 71.10.Fd DOI:10.5488/CMP.9.1.161 http://dspace.nbuv.gov.ua/handle/123456789/121310 en Condensed Matter Physics Інститут фізики конденсованих систем НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| description |
A model for organic quasi-one-dimensional conductors (TMTTF)₂X and (TMTSF)₂X is considered. The anisotropic
character of these compounds is modelled by two different hopping parameters: t between nearest
neighbors (NN) in a chain of tetramethyl-tetrathiafulvalene (TMTTF) or tetramethyl-tetraselenfulvalene
(TMTSF) molecules and t' between the chains (NNN - between next nearest neighbors). Taking into account
the correlated hopping of electrons allows us to describe the effect of site occupancy on hopping processes.
In a regime of strong intraatomic correlation, high energy processes are cut off by applying two successive
canonical transformations. An effective model is obtained for concentration of electrons n < 1 which contains
kinetic exchange terms of antiferromagnetic (AF) nature. Oppositely, NNN hopping and correlated hopping
disfavor the AF order. The energy spectrum of the effective model is calculated. Application of the obtained
results to quasi-one-dimensional conductors is discussed. |
| format |
Article |
| author |
Skorenkyy, Yu. Kramar, O. |
| spellingShingle |
Skorenkyy, Yu. Kramar, O. Energy spectrum of the organic quasi-1D conductors with NNN and correlated hopping Condensed Matter Physics |
| author_facet |
Skorenkyy, Yu. Kramar, O. |
| author_sort |
Skorenkyy, Yu. |
| title |
Energy spectrum of the organic quasi-1D conductors with NNN and correlated hopping |
| title_short |
Energy spectrum of the organic quasi-1D conductors with NNN and correlated hopping |
| title_full |
Energy spectrum of the organic quasi-1D conductors with NNN and correlated hopping |
| title_fullStr |
Energy spectrum of the organic quasi-1D conductors with NNN and correlated hopping |
| title_full_unstemmed |
Energy spectrum of the organic quasi-1D conductors with NNN and correlated hopping |
| title_sort |
energy spectrum of the organic quasi-1d conductors with nnn and correlated hopping |
| publisher |
Інститут фізики конденсованих систем НАН України |
| publishDate |
2006 |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/121310 |
| citation_txt |
Energy spectrum of the organic quasi-1D conductors with NNN and correlated hopping / Yu. Skorenkyy, O. Kramar // Condensed Matter Physics. — 2006. — Т. 9, № 1(45). — С. 161–168
. — Бібліогр.: 45 назв. — англ. |
| series |
Condensed Matter Physics |
| work_keys_str_mv |
AT skorenkyyyu energyspectrumoftheorganicquasi1dconductorswithnnnandcorrelatedhopping AT kramaro energyspectrumoftheorganicquasi1dconductorswithnnnandcorrelatedhopping |
| first_indexed |
2023-10-18T20:39:08Z |
| last_indexed |
2023-10-18T20:39:08Z |
| _version_ |
1796150758928809984 |