Resistivity Anisotropy and Hall Coefficient of Pb-Doped Bi2212 Single Crystals期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Resistivity Anisotropy and Hall Coefficient of Pb-Doped Bi2212 Single Crystals

Authors:	T. Yamada M. Motohashi H. Kobayashi T. Fujita J. Shimoyama K. Kishio

Affiliation:	(1) Department of Superconductivity, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan

Abstract:	In-plane and out-of-plane resistivity and Hall coefficient measurements were carried out on Bi_2.1-xPb_xSr₂CaCu₂O_y(x = 0 0.6) single crystals with various oxygen concentration. The resistivity anisotropy $gamma ^2 ( = rho _c /(rho _a {text{ }}rho _b )^{1/2} )$ was decreased with an increase of oxygen concentration and Pb content. Hall coefficient, R_H, measurement revealed that the Pb-doping increases carrier concentration in the present system, however, its essential effect on reducing anisotropy was confirmed by comparing R_Hand ²of the Pb-free and Pb-doped crystals.

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