Electronic switching of single silicon atoms by molecular field effects

Krishnan R Harikumar; John C Polanyi; Peter A Sloan; Serge Ayissi; Werner A Hofer

doi:10.1021/ja062874c

Electronic switching of single silicon atoms by molecular field effects

Krishnan R Harikumar, John C Polanyi, Peter A Sloan, Serge Ayissi, Werner A Hofer

Department of Physics

Research output: Contribution to journal › Article › peer-review

34 Citations (SciVal)

Abstract

We have observed on-off switching of scanning tunneling microscope current flow to silicon adatoms of the Si(111)-(7 x 7) surface that are enclosed within a bistable dimeric corral of self-assembled chlorododecane molecules. These thermally activated oscillations amounted to an order of magnitude change in the current. Theory showed that small changes in molecular configuration could cause alterations in the corralled adatom’s electronic energy by as much as 1 eV due to local field effects, accounting for the observed current switching.

Original language	English
Pages (from-to)	16791-16797
Number of pages	7
Journal	Journal of the American Chemical Society
Volume	128
Issue number	51
DOIs	https://doi.org/10.1021/ja062874c
Publication status	Published - 2006

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abstract = "We have observed on-off switching of scanning tunneling microscope current flow to silicon adatoms of the Si(111)-(7 x 7) surface that are enclosed within a bistable dimeric corral of self-assembled chlorododecane molecules. These thermally activated oscillations amounted to an order of magnitude change in the current. Theory showed that small changes in molecular configuration could cause alterations in the corralled adatom{\textquoteright}s electronic energy by as much as 1 eV due to local field effects, accounting for the observed current switching.",

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AU - Polanyi, John C

AU - Sloan, Peter A

AU - Ayissi, Serge

AU - Hofer, Werner A

PY - 2006

Y1 - 2006

N2 - We have observed on-off switching of scanning tunneling microscope current flow to silicon adatoms of the Si(111)-(7 x 7) surface that are enclosed within a bistable dimeric corral of self-assembled chlorododecane molecules. These thermally activated oscillations amounted to an order of magnitude change in the current. Theory showed that small changes in molecular configuration could cause alterations in the corralled adatom’s electronic energy by as much as 1 eV due to local field effects, accounting for the observed current switching.

AB - We have observed on-off switching of scanning tunneling microscope current flow to silicon adatoms of the Si(111)-(7 x 7) surface that are enclosed within a bistable dimeric corral of self-assembled chlorododecane molecules. These thermally activated oscillations amounted to an order of magnitude change in the current. Theory showed that small changes in molecular configuration could cause alterations in the corralled adatom’s electronic energy by as much as 1 eV due to local field effects, accounting for the observed current switching.

UR - http://dx.doi.org/10.1021/ja062874c

U2 - 10.1021/ja062874c

DO - 10.1021/ja062874c

M3 - Article

SN - 0002-7863

VL - 128

SP - 16791

EP - 16797

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

IS - 51

ER -

Electronic switching of single silicon atoms by molecular field effects

Abstract

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