Abstract
The frequency response of the photovoltaic component of light-induced voltages in superconducting YBCO films having different morphologies has been measured for the first time over a broad range of 1.5 Hz to 150 kHz. It is shown that the deviation of the high-frequency response from the conventional relaxation dependence observed in one of the samples can be due to a spread in parameters of the elementary photoemfs generated in different regions of the film. The data obtained permitted estimation of a number of quantities characterizing the photoconducting properties of the nonmetallic regions with extended inhomogeneities which are responsible for the onset of the photovoltaic signal.
Published Version
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