Electron tunneling through alkanedithiol molecules

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dc.contributor.author Hoft, RC
dc.contributor.author Liu, J
dc.contributor.author Cortie, MB
dc.contributor.author Ford, MJ
dc.date.accessioned 2009-11-09T05:34:17Z
dc.date.issued 2006
dc.identifier.citation Progress in Biomedical Optics and Imaging - Proceedings of SPIE, 2006, 6036
dc.identifier.issn 1605-7422
dc.identifier.other E1 en_US
dc.identifier.uri http://hdl.handle.net/10453/2326
dc.description.abstract We report on first principles calculations of the tunneling current across n-alkanedithiol molecules (n = 4,6,8,10,12) sandwiched between two Au {111} electrodes. The conductance drops exponentially with increased chain length with decay parameter βn= 0.9. The results are compared with scanning tunneling microscopy measurements on decanedithiol and with other n-alkanedithiol (n = 6,8,10) results in the literature. The theoretical results are found to be an order of magnitude larger than experimental values but follow the same trend. However, two additional, more realistic, geometries are modeled by changing the bond type and by combining the first-principles results with a Wentzel-Kramer-Brillouin (WKB) expression for tunneling across the air gap that is invariably present during scanning tunneling microscopy (STM) measurements. These results are more compatible with the experimental data.
dc.relation.isbasedon 10.1117/12.638349
dc.title Electron tunneling through alkanedithiol molecules
dc.type Conference Proceeding
dc.parent Progress in Biomedical Optics and Imaging - Proceedings of SPIE
dc.journal.volume 6036
dc.journal.number en_US
dc.publocation Bellingham, USA en_US
dc.publocation Cairns, Australia
dc.identifier.startpage 3603 en_US
dc.identifier.endpage 3603 en_US
dc.cauo.name SCI.Physics and Advanced Materials en_US
dc.conference Verified OK en_US
dc.conference Environmental Research Event Conference
dc.conference.location Brisbane, AUSTRALIA en_US
dc.for 1007 Nanotechnology
dc.personcode 020302
dc.personcode 020323
dc.personcode 040173
dc.personcode 10203622
dc.percentage 100 en_US
dc.classification.name Nanotechnology en_US
dc.classification.type FOR-08 en_US
dc.custom Conference on BioMEMS and Nanotechnology II en_US
dc.date.activity 20051212 en_US
dc.date.activity 2006-12-10
dc.location.activity Brisbane, AUSTRALIA en_US
dc.location.activity Sydney, Australia
dc.description.keywords Electron tunneling
dc.description.keywords Molecular conductance
dc.description.keywords Molecular electronics
dc.description.keywords Scanning tunneling spectroscopy
dc.description.keywords Self-assembled monolayer
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
pubs.organisational-group /University of Technology Sydney/Strength - Materials and Technology for Energy Efficiency
utslib.copyright.status Closed Access
utslib.copyright.date 2015-04-15 12:23:47.074767+10
pubs.consider-herdc true
utslib.collection.history Uncategorised (ID: 363)
utslib.collection.history General (ID: 2)
utslib.collection.history General Collection (ID: 346) [2015-05-15T14:12:17+10:00]

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