Electronic excitations and correlations in quantum bars
The spectrum of boson fields and two-point correlators are analyzed in a quantum bar system (a superlattice formed by two crossed interacting arrays of quantum wires), with a short-range interwire interaction. The standard bosonization procedure is shown to be valid, within the two-wave approximatio...
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| Published in: | Физика низких температур |
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| Date: | 2002 |
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| Format: | Article |
| Language: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2002
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/130232 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Electronic excitations and correlations in quantum bars / I.Kuzmenko, S.Gredeskul, K.Kikoin, Y.Avishai // Физика низких температур. — 2002. — Т. 28, № 7. — С. 752-762. — Бібліогр.: 17 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
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Kuzmenko, I. Gredeskul, S. Kikoin, K. Avishai, Y. 2018-02-09T10:46:57Z 2018-02-09T10:46:57Z 2002 Electronic excitations and correlations in quantum bars / I.Kuzmenko, S.Gredeskul, K.Kikoin, Y.Avishai // Физика низких температур. — 2002. — Т. 28, № 7. — С. 752-762. — Бібліогр.: 17 назв. — англ. 0132-6414 PACS: 73.23.-b, 73.40.-c https://nasplib.isofts.kiev.ua/handle/123456789/130232 The spectrum of boson fields and two-point correlators are analyzed in a quantum bar system (a superlattice formed by two crossed interacting arrays of quantum wires), with a short-range interwire interaction. The standard bosonization procedure is shown to be valid, within the two-wave approximation. The system behaves as a sliding Luttinger liquid in the vicinity of the Γ point, but its spectral and correlation characteristics have either 1D or 2D nature depending on the direction of the wave vector in the rest of the Brillouin zone. Due to the interwire interaction, unperturbed states propagating along the two arrays of wires are always mixed, and the transverse components of the correlation functions do not vanish. This mixing is especially strong around the diagonals of the Brillouin zone, where the transverse correlators have the same order of magnitude as the longitudinal ones. S. G. and K. K. are indebted to L. Gorelik, M. Jonson, I. Krive, and R. Shekhter for helpful discussions. They also thank Chalmers Technical University, where this work was started, for hospitality and support. This research is supported in part by grants from the Israel Science foundations, the DIP German–Israel cooperation program, and the USA–Israel BSF program. S. G. is happy to see this paper published in the special issue devoted to the Jubilee of his old friend and colleague, Academician Victor Eremenko. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Сильно коррелированные системы и высокотемпературная сверхпроводимость Electronic excitations and correlations in quantum bars Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
Electronic excitations and correlations in quantum bars |
| spellingShingle |
Electronic excitations and correlations in quantum bars Kuzmenko, I. Gredeskul, S. Kikoin, K. Avishai, Y. Сильно коррелированные системы и высокотемпературная сверхпроводимость |
| title_short |
Electronic excitations and correlations in quantum bars |
| title_full |
Electronic excitations and correlations in quantum bars |
| title_fullStr |
Electronic excitations and correlations in quantum bars |
| title_full_unstemmed |
Electronic excitations and correlations in quantum bars |
| title_sort |
electronic excitations and correlations in quantum bars |
| author |
Kuzmenko, I. Gredeskul, S. Kikoin, K. Avishai, Y. |
| author_facet |
Kuzmenko, I. Gredeskul, S. Kikoin, K. Avishai, Y. |
| topic |
Сильно коррелированные системы и высокотемпературная сверхпроводимость |
| topic_facet |
Сильно коррелированные системы и высокотемпературная сверхпроводимость |
| publishDate |
2002 |
| language |
English |
| container_title |
Физика низких температур |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| format |
Article |
| description |
The spectrum of boson fields and two-point correlators are analyzed in a quantum bar system (a superlattice formed by two crossed interacting arrays of quantum wires), with a short-range interwire interaction. The standard bosonization procedure is shown to be valid, within the two-wave approximation. The system behaves as a sliding Luttinger liquid in the vicinity of the Γ point, but its spectral and correlation characteristics have either 1D or 2D nature depending on the direction of the wave vector in the rest of the Brillouin zone. Due to the interwire interaction, unperturbed states propagating along the two arrays of wires are always mixed, and the transverse components of the correlation functions do not vanish. This mixing is especially strong around the diagonals of the Brillouin zone, where the transverse correlators have the same order of magnitude as the longitudinal ones.
|
| issn |
0132-6414 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/130232 |
| citation_txt |
Electronic excitations and correlations in quantum bars / I.Kuzmenko, S.Gredeskul, K.Kikoin, Y.Avishai // Физика низких температур. — 2002. — Т. 28, № 7. — С. 752-762. — Бібліогр.: 17 назв. — англ. |
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AT kuzmenkoi electronicexcitationsandcorrelationsinquantumbars AT gredeskuls electronicexcitationsandcorrelationsinquantumbars AT kikoink electronicexcitationsandcorrelationsinquantumbars AT avishaiy electronicexcitationsandcorrelationsinquantumbars |
| first_indexed |
2025-12-07T13:24:31Z |
| last_indexed |
2025-12-07T13:24:31Z |
| _version_ |
1850856042488922112 |