Quantization accuracy of the acoustoelectric current

✍ Scribed by Xiang-Bai Chen; Xiang-Song Chen; Jie Gao

• Book ID: 104093673
• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 724 KB
• Volume: 150
• Category: Article
• ISSN: 0038-1098
• DOI: 10.1016/j.ssc.2009.09.045

✦ Synopsis

By deriving analytical formulae for the quantization accuracy of the acoustoelectric current, we reveal that: (1) the flatness of the current plateau for the typical present devices has reached the theoretical limit of about 100 ppm over a 1/1000 change of the gate voltage; (2) increasing the transport channel length, and counterintuitively, increasing the acoustic wavelength as well, would improve the quantization accuracy, and very promisingly up to 0.01 ppm as required for a quantum current standard.