The Frequency Dependence of Quantized Current Plateaus Induced by Surface Acoustic Waves Through a Quantum Point Contact
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 transferre...
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| Veröffentlicht in: | Journal of the Korean Physical Society 2009, 55(6), , pp.2482-2485 |
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| Hauptverfasser: | , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | 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. KCI Citation Count: 1 |
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| ISSN: | 0374-4884 1976-8524 |
| DOI: | 10.3938/jkps.55.2482 |