Transport Properties Of Electron-Doped La2-Xcexcuo(4) Thin Film In The Under-Doped Region

Underdoped electron-doped La2-xCexCuO4 (x=0.06-0.09) thin films were successfully grown and investigated for the transport properties in ab-plane. It was found that the inplane resistivity rho(ab) shows a semiconductor behavior when x=0.06, with increasing the Cc concentration to the optimal doping level, it changes to the two dimensional Fermi-liquid behavior. In the films with x >= 0.08, a Kondo effect like scattering is observed in the low temperature range.