Electron dynamics in the normal state of cuprates: Spectral function, Fermi surface and ARPES data
An influence of the electron-phonon interaction on excitation spectrum and damping in a narrow band electron subsystem of cuprates has been investigated. Within the framework of the t-J model an approach to solving a problem of account of both strong electron correlations and local electron–phonon b...
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| Дата: | 2016 |
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| Автор: | |
| Формат: | Стаття |
| Мова: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2016
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| Назва видання: | Физика низких температур |
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| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/129323 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Electron dynamics in the normal state of cuprates: Spectral function, Fermi surface and ARPES data / E.E. Zubov // Физика низких температур. — 2016. — Т. 42, № 11. — С. 1328-1344. — Бібліогр.: 24 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
irk-123456789-129323 |
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irk-123456789-1293232018-01-19T03:04:15Z Electron dynamics in the normal state of cuprates: Spectral function, Fermi surface and ARPES data Zubov, E.E. К 30-летию открытия высокотемпературной сверхпроводимости An influence of the electron-phonon interaction on excitation spectrum and damping in a narrow band electron subsystem of cuprates has been investigated. Within the framework of the t-J model an approach to solving a problem of account of both strong electron correlations and local electron–phonon binding with characteristic Einstein mode ω ₀ in the normal state has been presented. In approximation Hubbard-I it was found an exact solution for the polaron bands. We established that in the low-dimensional system with a pure kinematic part of Hamiltonian a complicated excitation spectrum is realized. It is determined mainly by peculiarities of the lattice Green's function. In the definite area of the electron concentration and hopping integrals a correlation gap may be possible on the Fermi level. Also, in specific cases it is observed a doping evolution of the Fermi surface. We found that the strong electron–phonon binding enforces a degree of coherence of electron-polaron excitations near the Fermi level and spectrum along the nodal direction depends on wave vector module weakly. It corresponds to ARPES data. A possible origin of the experimentally observed kink in the nodal direction of cuprates is explained by fine structure of the polaron band to be formed near the mode −ω₀. 2016 Article Electron dynamics in the normal state of cuprates: Spectral function, Fermi surface and ARPES data / E.E. Zubov // Физика низких температур. — 2016. — Т. 42, № 11. — С. 1328-1344. — Бібліогр.: 24 назв. — англ. 0132-6414 PACS: 79.60.–i, 74.72.–h, 71.27.+a, 71.38.–k http://dspace.nbuv.gov.ua/handle/123456789/129323 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 |
К 30-летию открытия высокотемпературной сверхпроводимости К 30-летию открытия высокотемпературной сверхпроводимости |
| spellingShingle |
К 30-летию открытия высокотемпературной сверхпроводимости К 30-летию открытия высокотемпературной сверхпроводимости Zubov, E.E. Electron dynamics in the normal state of cuprates: Spectral function, Fermi surface and ARPES data Физика низких температур |
| description |
An influence of the electron-phonon interaction on excitation spectrum and damping in a narrow band electron subsystem of cuprates has been investigated. Within the framework of the t-J model an approach to solving a problem of account of both strong electron correlations and local electron–phonon binding with characteristic Einstein mode ω ₀ in the normal state has been presented. In approximation Hubbard-I it was found an exact solution for the polaron bands. We established that in the low-dimensional system with a pure kinematic part of Hamiltonian a complicated excitation spectrum is realized. It is determined mainly by peculiarities of the lattice Green's function. In the definite area of the electron concentration and hopping integrals a correlation gap may be possible on the Fermi level. Also, in specific cases it is observed a doping evolution of the Fermi surface. We found that the strong electron–phonon binding enforces a degree of coherence of electron-polaron excitations near the Fermi level and spectrum along the nodal direction depends on wave vector module weakly. It corresponds to ARPES data. A possible origin of the experimentally observed kink in the nodal direction of cuprates is explained by fine structure of the polaron band to be formed near the mode −ω₀. |
| format |
Article |
| author |
Zubov, E.E. |
| author_facet |
Zubov, E.E. |
| author_sort |
Zubov, E.E. |
| title |
Electron dynamics in the normal state of cuprates: Spectral function, Fermi surface and ARPES data |
| title_short |
Electron dynamics in the normal state of cuprates: Spectral function, Fermi surface and ARPES data |
| title_full |
Electron dynamics in the normal state of cuprates: Spectral function, Fermi surface and ARPES data |
| title_fullStr |
Electron dynamics in the normal state of cuprates: Spectral function, Fermi surface and ARPES data |
| title_full_unstemmed |
Electron dynamics in the normal state of cuprates: Spectral function, Fermi surface and ARPES data |
| title_sort |
electron dynamics in the normal state of cuprates: spectral function, fermi surface and arpes data |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| publishDate |
2016 |
| topic_facet |
К 30-летию открытия высокотемпературной сверхпроводимости |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/129323 |
| citation_txt |
Electron dynamics in the normal state of cuprates: Spectral function, Fermi surface and ARPES data / E.E. Zubov // Физика низких температур. — 2016. — Т. 42, № 11. — С. 1328-1344. — Бібліогр.: 24 назв. — англ. |
| series |
Физика низких температур |
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AT zubovee electrondynamicsinthenormalstateofcupratesspectralfunctionfermisurfaceandarpesdata |
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2023-10-18T20:57:28Z |
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2023-10-18T20:57:28Z |
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