Тип публикации: статья из журнала
Год издания: 2009
Идентификатор DOI: 10.1134/S1063776109120139
Ключевые слова: Ab initio calculations, Calculated values, Cooper pairing, Isotope effect, Magnetic mechanisms, Order of magnitude, Pairing mechanism, Phonon mechanism, Strongly correlated electrons, Superconducting pairing mechanism, Superconducting state, Type theory, Carrier mobility, Electron-phonon interactions, Isotopes, Superconductivity, Superconducting magnets
Аннотация: Peculiarities of the temperature isotope effect in a BCS-type theory describing the exchange and phonon mechanisms of Cooper pairing in a system of strongly correlated electrons are considered. The electron-phonon interaction constant is determined from the fitting of the calculated value of the isotope-effect index to the observedПоказать полностьюvalue with the parameters of La(2 - x) Sr (x) CuO(4) obtained from ab initio calculations. The value of this constant indicates that the contribution from the traditional pairing mechanism to the superconducting state is of the same order of magnitude as the contribution from the magnetic mechanism.
Журнал: JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS
Выпуск журнала: Vol. 109, Is. 6
Номера страниц: 1017-1021
ISSN журнала: 10637761
Место издания: NEW YORK
Издатель: MAIK NAUKA/INTERPERIODICA/SPRINGER