Angular dependence of resistivity in the superconducting state of NdFeAsO0.82F0.18 single crystals
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چکیده
We report the results of angle dependent resistivity of NdFeAsO0.82F0.18 single crystals in the superconducting state. By doing the scaling of resistivity within the frame of the anisotropic Ginzburg-Landau theory, it is found that the angle dependent resistivity measured under different magnetic fields at a certain temperature can be collapsed onto one curve. As a scaling parameter, the anisotropy Γ can be determined for different temperatures. It is found that Γ(T ) increases slowly with decreasing temperature, varying from Γ ≃ 5.48 at T = 50 K to Γ ≃ 6.24 at T = 44 K. This temperature dependence can be understood within the picture of multi-band superconductivity. Angular dependence of resistivity in the superconducting state of NdFeAsO0.82F0.18 single crystals2
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تاریخ انتشار 2008