THE SUPERCONDUCTING T(C) INCREASE CAUSED BY ANDERSON IMPURITIES WITH A LOCAL ELECTRON-PHONON COUPLING IN THE REGION OF THEIR VALENCE INSTABILITY

被引：0
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作者：
MALSHUKOV, AG
ATENCIO, AA
机构：
来源：
ZHURNAL EKSPERIMENTALNOI I TEORETICHESKOI FIZIKI | 1992年 / 101卷 / 03期
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O4 [物理学];
学科分类号：
0702 ;
摘要：
The effect of Anderson impurities on the superconducting transition temperature T(c) of dilute metal alloys is considered. The impurities are described by the Anderson Hamiltonian, the interaction of electrons on a quasistationary impurity level with lattice vibrations being taken into account. The region of strong lattice anharmonicity caused by valence fluctuations is investigated. Using the Fermi liquid approach it is found that T(c) can increase considerably even when the Coulomb repulsion of electrons localized on the impurity level is infinitely large.
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页码：1005 / 1013
页数：9
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