抄録
The capacitance-voltage (C-V) characteristics were measured at various temperatures by using the Ag-MgO-high-Tc superconductor (Ba2YCu3Ox and Bi2Sr2CaCu2Ox) MIS diode structure. With decreasing temperature, the capacitance of Ba2YCu3Ox films decreases. This temperature dependence of the capacitance will be discussed based on a marginal Fermi liquid theory.