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Direct measurement of the maximum tunnel rate in a radio frequency single electron transistor operated as a microwave mixer | | D. J. Reilly
; T. M. Buehler
; | | Date: |
16 Nov 2004 | | Subject: | Mesoscopic Systems and Quantum Hall Effect; Superconductivity | cond-mat.mes-hall cond-mat.supr-con | | Abstract: | By operating the radio frequency single electron transistor (rf-SET) as a mixer we present measurements in which the RC roll-off of the tunnel junctions is observed at high frequencies. Our technique makes use of the non-linear rf-SET transconductance to mix high frequency gate signals and produce difference-frequency components that fall within the bandwidth of the rf-SET. At gate frequencies >15GHz the induced charge on the rf-SET island is altered on time-scales faster than the inverse tunnel rate, preventing mixer operation. We suggest the possibility of utilizing this technique to sense high frequency signals beyond the usual rf-SET bandwidth. | | Source: | arXiv, cond-mat/0411399 | | Services: | Forum | Review | PDF | Favorites | |
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