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Author Bian, X. ♦ Hasko, D. G. ♦ Milne, W. I.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ AMPLITUDES ♦ CURRENTS ♦ DETECTION ♦ FIELD EFFECT TRANSISTORS ♦ MICROWAVE RADIATION ♦ OPERATION ♦ POLARIZATION ♦ PUMPING ♦ READOUT SYSTEMS ♦ SIGNALS ♦ SIGNAL-TO-NOISE RATIO ♦ TRAPPED ELECTRONS ♦ TRAPPING
Abstract 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.
ISSN 00036951
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-07-13
Publisher Place United States
Journal Applied Physics Letters
Volume Number 107
Issue Number 2


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