Abstract
The acousto-electric current through a split gate induced by surface acoustic waves (SAW) was studied. The current plateaus were observed when proper frequencies of SAW were applied to the device. The resulting current plateau values corresponded to nef, where n is the number of electrons transferred per cycle and f is the induced SAW frequency. Also, the width of the plateaus was found to change periodically as the SAW frequency changed. Unwanted coupling of the RF signal (applied to inter-digitized transducer to produce SAW) to the gate of QPC were found to cause the changes in plateaus width.
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