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Displacement Current Staircase due to Coulomb Blockade

Published online by Cambridge University Press:  17 March 2011

Kouhei Nagano ,
Atsushi Okuda  and
Yutaka Majima
Kouhei Nagano
Affiliation:
Department of Physical Electronics, Tokyo Institute of Technology
Atsushi Okuda
Affiliation:
Department of Physical Electronics, Tokyo Institute of Technology
Yutaka Majima
Affiliation:
Department of Physical Electronics, Tokyo Institute of Technology Organization and Function, PRESTO, Japan Science and Technology Corporation Tokyo 152-8552, JAPAN
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Abstract

In the two-junction system of the scanning vibrating probe/ Au dot / vacuum / Si structure, theoretical equations of both the displacement current waveform iD(t) and the mean displacement current ID(VP) due to Coulomb blockade are analyzed by using the orthodox theory. By usingtheoretical iD(t), the single electron motion on a Coulomb island in a period of probe vibration isexplained. Experimental ID(VP) curves due to Coulomb blockade under a constant probe voltage VP clearly show the displacement current staircase and are in good agreement with the theoretical ID(VP) curve. By using this method, the average number of quantized electrons on Au dots is directly measured through the displacement current staircase.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 699: Symposium R – Electrically Based Microstructural Characterization III , 2001 , R4.7
Copyright
Copyright © Materials Research Society 2002

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