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Shot noise variation within ensembles of gold atomic break junctions at room temperature

Shot noise variation within ensembles of gold atomic break junctions at room temperature

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CHEN, Ruoyu, Manuel MATT, Fabian PAULY, Peter NIELABA, Juan C. CUEVAS, Douglas NATELSON, 2014. Shot noise variation within ensembles of gold atomic break junctions at room temperature

@unpublished{Chen2014noise-29254, title={Shot noise variation within ensembles of gold atomic break junctions at room temperature}, year={2014}, author={Chen, Ruoyu and Matt, Manuel and Pauly, Fabian and Nielaba, Peter and Cuevas, Juan C. and Natelson, Douglas} }

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/29254"> <dcterms:issued>2014</dcterms:issued> <dc:creator>Pauly, Fabian</dc:creator> <dcterms:title>Shot noise variation within ensembles of gold atomic break junctions at room temperature</dcterms:title> <dc:contributor>Natelson, Douglas</dc:contributor> <dc:creator>Cuevas, Juan C.</dc:creator> <dc:creator>Chen, Ruoyu</dc:creator> <dc:creator>Nielaba, Peter</dc:creator> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2014-11-14T10:22:25Z</dc:date> <dc:language>eng</dc:language> <dc:contributor>Nielaba, Peter</dc:contributor> <dcterms:abstract xml:lang="eng">Atomic-scale junctions are a powerful tool to study quantum transport, and are frequently examined through the mechanically controllable break junction technique (MCBJ). The junction-to-junction variation of atomic configurations often leads to a statistical approach, with ensemble-averaged properties providing access to the relevant physics. However, the full ensemble contains considerable additional information. We report a new analysis of shot noise over entire ensembles of junction configurations using scanning tunneling microscope (STM)-style gold break junctions at room temperature in ambient conditions, and compare this data with simulations based on molecular dynamics (MD), a sophisticated tight-binding model, and nonequilibrium Green's functions. The experimental data show a suppression in the variation of the noise near conductances dominated by fully transmitting channels, and a surprising participation of multiple channels in the nominal tunneling regime. Comparison with the simulations, which agree well with published work at low temperatures and ultrahigh vacuum (UHV) conditions, suggests that these effects likely result from surface contamination and disorder in the electrodes. We propose additional experiments that can distinguish the relative contributions of these factors.</dcterms:abstract> <dc:contributor>Chen, Ruoyu</dc:contributor> <dc:creator>Matt, Manuel</dc:creator> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/29254"/> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2014-11-14T10:22:25Z</dcterms:available> <dc:contributor>Matt, Manuel</dc:contributor> <dcterms:rights rdf:resource="http://nbn-resolving.org/urn:nbn:de:bsz:352-20140905103605204-4002607-1"/> <dc:contributor>Cuevas, Juan C.</dc:contributor> <dc:contributor>Pauly, Fabian</dc:contributor> <dc:creator>Natelson, Douglas</dc:creator> </rdf:Description> </rdf:RDF>

Dateiabrufe seit 14.11.2014 (Informationen über die Zugriffsstatistik)

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