Single crystal growth and anisotropic resistivity of electron-type Nd2-xCexCuO4-y

A series of Nd2-xCexCuO4-y single crystals with different Ce concentrations have been grown for use in an anisotropic resistivity measurement study using the self-flux method. Both the in-plane and out-of-plane resistivity (ρab and ρc) are measured for high quality Nd2-xCexCuO4-y single crystals from the underdoped to the overdoped regime. The ρ(T) for all samples has a nearly quadratic temperature dependence and displays a logarithmic correction. The anisotropy ratio is about (0.6-2.5) x 103. The temperature dependence behaviour of ρc/ρab is not remarkable. The magnitude at low temperature is as large as 1.5 times that at room temperature. This may be attributed to the contribution of the 3D transport mechanism in the Nd-Ce-Cu-O system and has been related to electron-electron interaction in a cylindrical Fermi surface