ANOMALOUS EFFECT IN LA2-XSRXCUO4 OF DOPING LEVEL X=1 4(N)/

Anomalous electric response of La2-xSrxCuO4 thin film at Sr doping lev els of x approximate to 1/4 and 1/16 is observed when charge moves alo ng the c axis. The capacitance C-t of the Pd/La2-xSrxCuO4/SrTiO3/Pd st ructure increases sharply, exceeding the capacitance C-STO of the Pd/S rTiO3/Pd structure. Oscillatory negative voltage is observed in 4-term inal resistivity measurements of La2-xSrxCuO4 thin film using Pd elect rodes at small current. These phenomena are explained by a model of th e spatial ordered state in which CuO2 layers of La2-xSrxCuO4 is replet e with O hole pairs.