Charge transfer and carrier density in Bi-2212 high-Tc superconductors

H. Maletta, M. Weber,A. Amato,J. Bock,V.N. Duginov,V.G. Grebinnik,F.N. Gygax,S. Kapusta,B.F. Kirillov,V.G. Olshevsky,A.V. Pirogov,Y.Yu. Pomjakushin,A.N. Ponomarev, E. Preisler,A. Schenck,V.G. Storchak,V.A. Zhukov

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS（1992）

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摘要

Muon spin relaxation and neutron diffraction measurements were performed in Y and Pb substituted Bi-2212 superconductors in order to study the correlation between T(c) and hole density. We observe first an increase of both T(c) and the superconducting carrier density via hole transfer, but subsequently (at higher "doping") more and more holes are prevented from forming superconducting pairs.

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关键词

neutron diffraction,charge transfer,superconductors

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