Article ID Journal Published Year Pages File Type
1596353 Solid State Communications 2008 5 Pages PDF
Abstract

The normal-state Hall effect for Tl0.8Hg0.2Ba2Ca2−xRxCu3O9−δ, where R=Sm and Yb with 0≤x≤0.150≤x≤0.15, is measured above the superconducting transition temperature. The Hall coefficients RHRH, for all prepared samples, are positive and follow the Curie–Weiss temperature dependence type. Carrier-concentrations nHnH decrease as the substitution-content xx increases, as a result of the hole-filling mechanism. The sample with lower resistivity exhibits higher carrier-concentration. The Hall angle cot θHθH increases as the temperature increases and well fitted to the formula cot θH=αT2+βθH=αT2+β. The constant ββ is found to be strongly dependent on the substitution-content and it is correlated to the residual resistivity ρ0ρ0. Finally, the variation of Hall mobility with both temperature and substitution-content is reported.

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Physical Sciences and Engineering Materials Science Materials Science (General)
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