Properties of a negative-U superconductor with magnetic impurities

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作者：
Mori, N.
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来源：
Physica B: Condensed Matter | 1990年 / 165-66卷 / 02期
关键词：
Ceramic Materials - Copper Oxides--Impurities - Magnetic Materials;
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摘要：
Effects of magnetic impurities are theoretically studied for a superconductor induced by negative-U centers. The order parameter, the energy gap and the transition temperature are calculated as a function of the impurity concentration. It is shown that the depression of these parameters due to the magnetic depairing is much softened as compared with the case of a BCS superconductor. The results are consistent with experimental data for high-Tc oxides.
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页码：1047 / 1048
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