Title :
Recent measurements of single electron transport of surface acoustic wave devices at the NPL
Author :
Janssen, Jan-Theodoor ; Hartland, Anthony
Author_Institution :
Nat. Phys. Lab., Teddington, UK
fDate :
4/1/2001 12:00:00 AM
Abstract :
The quantized acoustoelectric current (QAC) induced by a surface acoustic wave in a one-dimensional (1-D) 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 and rf heating of the electron gas are also discussed
Keywords :
electric current measurement; measurement standards; quantum dots; surface acoustic wave devices; 1D channel; GaAs-AlGaAs; NPL; electron gas; empirical relationship; quantized acoustoelectric current; quantum current standard; rf heating; single electron transport; surface acoustic wave; surface acoustic wave devices; temperature dependence; Acoustic measurements; Acoustic waves; Current measurement; Electrical resistance measurement; Electrons; Frequency; Quantum dots; Surface acoustic wave devices; Surface acoustic waves; Voltage;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
