High-frequency single-electron transport and the quantized acoustoelectric effect

A quantized current may be induced through a one-dimensional channel by a strong surface acoustic wave. Such devices offer a possible route towards a current standard, with the high induced current being suitable for metrological applications. We report on new observations of quantized charge transp...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2000-05, Vol.280 (1), p.493-494
Main Authors: Cunningham, J, Talyanskii, V.I, Shilton, J.M, Pepper, M, Kristensen, A, Lindelof, P.E
Format: Article
Language:English
Subjects:
Quantized charge transport
Single electronics
Surface acoustic waves
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Summary:A quantized current may be induced through a one-dimensional channel by a strong surface acoustic wave. Such devices offer a possible route towards a current standard, with the high induced current being suitable for metrological applications. We report on new observations of quantized charge transport in etched constrictions. Plateaux flat to a precision of around ±50 parts per million are compared to results obtained in Schottky gated samples. The influence of a perpendicular magnetic field on the quantization is discussed for the first time.
ISSN:0921-4526
1873-2135
DOI:10.1016/S0921-4526(99)01844-X