Preparing and regulating a bi-stable molecular switch by atomic manipulation

We present a scanning tunneling microscopy (STM) investigation into the influence of the STM tip on the adsorption site switching of polychlorinatedbiphenyl (PCB) molecules on the Si(111)-7×7 surface at room temperature. From an initially stable adsorption configuration, atomic manipulation by charg...

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Main Authors: S. Sakulsermsuk, R. E. Palmer, P. A. Sloan
Format: Journal
Published: 2018
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/51774
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-517742018-09-04T06:14:39Z Preparing and regulating a bi-stable molecular switch by atomic manipulation S. Sakulsermsuk R. E. Palmer P. A. Sloan Materials Science Physics and Astronomy We present a scanning tunneling microscopy (STM) investigation into the influence of the STM tip on the adsorption site switching of polychlorinatedbiphenyl (PCB) molecules on the Si(111)-7×7 surface at room temperature. From an initially stable adsorption configuration, atomic manipulation by charge injection from the STM tip prepared a new bi-stable configuration that switched between two bonding arrangements. No switching rate bias dependence was found for +1.0 to +2.2V. Assuming a thermally driven switching process we find that the measured energy barriers to switching are influenced by the exact location of the STM tip by more than 10%. We propose that this energy difference is due the dispersion interaction between the tip and the molecule. © 2012 IOP Publishing Ltd. 2018-09-04T06:08:27Z 2018-09-04T06:08:27Z 2012-01-03 Journal 1361648X 09538984 2-s2.0-84866246297 10.1088/0953-8984/24/39/394014 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84866246297&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/51774
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Materials Science
Physics and Astronomy
spellingShingle Materials Science
Physics and Astronomy
S. Sakulsermsuk
R. E. Palmer
P. A. Sloan
Preparing and regulating a bi-stable molecular switch by atomic manipulation
description We present a scanning tunneling microscopy (STM) investigation into the influence of the STM tip on the adsorption site switching of polychlorinatedbiphenyl (PCB) molecules on the Si(111)-7×7 surface at room temperature. From an initially stable adsorption configuration, atomic manipulation by charge injection from the STM tip prepared a new bi-stable configuration that switched between two bonding arrangements. No switching rate bias dependence was found for +1.0 to +2.2V. Assuming a thermally driven switching process we find that the measured energy barriers to switching are influenced by the exact location of the STM tip by more than 10%. We propose that this energy difference is due the dispersion interaction between the tip and the molecule. © 2012 IOP Publishing Ltd.
format Journal
author S. Sakulsermsuk
R. E. Palmer
P. A. Sloan
author_facet S. Sakulsermsuk
R. E. Palmer
P. A. Sloan
author_sort S. Sakulsermsuk
title Preparing and regulating a bi-stable molecular switch by atomic manipulation
title_short Preparing and regulating a bi-stable molecular switch by atomic manipulation
title_full Preparing and regulating a bi-stable molecular switch by atomic manipulation
title_fullStr Preparing and regulating a bi-stable molecular switch by atomic manipulation
title_full_unstemmed Preparing and regulating a bi-stable molecular switch by atomic manipulation
title_sort preparing and regulating a bi-stable molecular switch by atomic manipulation
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84866246297&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/51774
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