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Can silicon dimers form logic gates?

Ian Appelbaum1,2,4, Tairan Wang1, Shanhui Fan3, J D Joannopoulos1 and V Narayanamurti2

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We have performed density functional theory calculations to show how a tungsten scanning probe can mediate the interactions between bistable Si(100) surface dimers. Interpreting the state of each dimer as a bit of information, we demonstrate the use of this mediated interaction to construct a NOR logic gate.


PACS

68.47.Fg Semiconductor surfaces

81.07.Nb Molecular nanostructures

84.30.Sk Pulse and digital circuits

85.65.+h Molecular electronic devices

Subjects

Electronics and devices

Semiconductors

Surfaces, interfaces and thin films

Nanoscale science and low-D systems

Dates

Issue 3 (September 2001)

Received 22 June 2001, in final form 3 August 2001

Published 28 August 2001



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