Наукова електронна бібліотека
періодичних видань НАН України
періодичних видань НАН України
Electronic excitations and correlations in quantum bars
Репозиторій DSpace/Manakin
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Electronic excitations and correlations in quantum bars
Тема:
Сильно коррелированные системы и высокотемпературная сверхпроводимость
Інший ID:
PACS: 73.23.-b, 73.40.-c
Посилання:
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.
Підтримка:
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.
Дата:
2002
Переглядів:
532
Завантажень:
291
Анотація:
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.
