CUED Publications database

Fast and sensitive detection of an oscillating charge

Bian, X and Milne, WI and Hasko, DG (2015) Fast and sensitive detection of an oscillating charge. Applied Physics Letters, 107. ISSN 0003-6951

Full text not available from this repository.


© 2015 AIP Publishing LLC. We investigate the high-frequency operation of a percolation field effect transistor to monitor microwave excited single trapped charge. Readout is accomplished by measuring the effect of the polarization field associated with the oscillating charge on the AC signal generated in the channel due to charge pumping. This approach is sensitive to the relative phase between the polarization field and the pumped current, which is different from the conventional approach relying on the amplitude only. Therefore, despite the very small influence of the single oscillating trapped electron, a large signal can be detected. Experimental results show large improvement in both signal-to-noise ratio and measurement bandwidth.

Item Type: Article
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:42
Last Modified: 23 Nov 2017 03:43