Title :
Recent measurements of single electron transport in surface acoustic wave devices at the NPL
Author :
Janssen, T.J.B.M. ; Hartland, A.
Author_Institution :
Nat. Phys. Lab., Teddington, UK
Abstract :
The quantized acoustoelectric current (QAC) induced by a surface acoustic wave in a one-dimensional channel, offers the possibility of a quantum current standard. We report on the accuracy and flatness of the QAC for several plateaux and demonstrate an empirical relationship between the current error and plateaux slopes. The temperature dependence of the QAC is also discussed.
Keywords :
Acoustic charge transport devices; Acoustoelectric effects; Electric current measurement; III-V semiconductors; Measurement standards; Quantum interference phenomena; Semiconductor quantum wires; Surface acoustic wave transducers; Surface acoustic waves; 2DEG; current error; empirical relationship; one-dimensional channel; plateaux slopes; quantized acoustoelectric current; quantum current standard; random telegraph signals; single electron transport; surface acoustic wave devices; Acoustic measurements; Acoustic waves; Current measurement; Electrical resistance measurement; Electrons; Frequency; Surface acoustic wave devices; Surface acoustic waves; Temperature dependence; Voltage;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2000 Conference on
Conference_Location :
Sydney, NSW, Australia
Print_ISBN :
0-7803-5744-2
DOI :
10.1109/CPEM.2000.850851
