Mechanism of characteristic shape of resistive transition in Bi2Sr2CaCu2O8 films made by laser evaporation |
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Authors: | Takeshi Fukami Takanobu Kamura Takashi Yamamoto Shoichi Mase |
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Affiliation: | Department of Physics, Kyushu University, Fukuoka 812, Japan |
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Abstract: | We measured the temperature dependence of resistivity, (T, H), of Bi2Sr2CaCu2O8 thin films in magnetic fields. These films have a preferential orientation of the c-axis perpendicular to a surface of the substrate. We could not observe any meaningful anisotropy of the characteristic shape of the resistive transition between two cases of the current flow parallel and perpendicular to the magnetic field in the basal plane. Therefore, it is very difficult to ascribe the broadness to any origin due to the Lorentz force produced by an external current. |
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