J. Cunningham et al., Quantized acoustoelectric current - An alternative route towards a standard of electric current, J L TEMP PH, 118(5-6), 2000, pp. 555-569
Experiments on, the current driven by surface acoustic waves in one dimensi
onal semiconductor channels are presented. Due to electron confinement by t
he wave and the channel potentials quantized electron transport is observed
when one electron is transferred through the channel per surface acoustic
wave cycle. The accuracy of current quantization achieved so far is discuss
ed.