TITLE

Single charge detection in capacitively coupled integrated single electron transistors based on single-walled carbon nanotubes

AUTHOR(S)
Zhou, Xin; Ishibashi, Koji
PUB. DATE
September 2012
SOURCE
Applied Physics Letters;9/17/2012, Vol. 101 Issue 12, p123506
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Single charge detection is demonstrated in the capacitively coupled integrated single electron transistors (SETs) in single-walled carbon nanotubes (SWCNTs) quantum dots. Two SETs are fabricated based on two different SWCNTs aligned in parallel, by taking advantage of the aligned growth of SWCNTs and subsequent transfer-printed techniques. In order to make both two SETs be capacitively coupled, a metal finger is fabricated on the top of them. The charge sensing is proved by the response of a detector current in one SWCNT-SET when the number of electrons in the other SWCNT-SET is changed by sweeping the corresponding gate voltages. In this integrated device, shifts of Coulomb oscillation peaks due to the single electron event are also observed.
ACCESSION #
80228101

 

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