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Scattering approach to frequency-dependent current noise in Fabry-Pérot graphene devices

Scattering approach to frequency-dependent current noise in Fabry-Pérot graphene devices

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Prüfsumme: MD5:7288a52874c0677ad5dc1fe0ee1b466a

HAMMER, Jan, Wolfgang BELZIG, 2012. Scattering approach to frequency-dependent current noise in Fabry-Pérot graphene devices

@unpublished{Hammer2012Scatt-22477, title={Scattering approach to frequency-dependent current noise in Fabry-Pérot graphene devices}, year={2012}, author={Hammer, Jan and Belzig, Wolfgang} }

<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/123456789/22477"> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2013-03-18T09:42:39Z</dc:date> <dcterms:title>Scattering approach to frequency-dependent current noise in Fabry-Pérot graphene devices</dcterms:title> <dc:creator>Hammer, Jan</dc:creator> <dcterms:rights rdf:resource="http://nbn-resolving.org/urn:nbn:de:bsz:352-20140905103605204-4002607-1"/> <dc:creator>Belzig, Wolfgang</dc:creator> <dcterms:abstract xml:lang="eng">We study finite-frequency quantum noise and photon-assisted electron transport through a wide and ballistic graphene sheet sandwiched between two metallic leads. The elementary excitations allow as to examine the differences between effects related to Fabry-P\'erot like interferences and signatures caused by correlations of coherently scattered particles in electron- and hole-like parts of the Dirac spectrum. We identify different features in the current-current auto- and cross-correlation spectra and trace them back to the interference patterns of the product of transmission- and reflection amplitudes which define the integrands of the involved correlators. At positive frequencies the correlator of the auto-terminal noise spectrum with final- and initial state associated to the measurement terminal is dominant. Phase jumps occur within the interference patterns of corresponding integrands, which also reveal the intrinsic energy scale of the two-terminal graphene setup. The excess noise spectra, as well as the cross-correlation ones, show large fluctuations between positive and negative values. Oscillatory signatures of the cross-correlation noise are due to an alternating behavior of the integrands.</dcterms:abstract> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/22477"/> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2013-03-18T09:42:39Z</dcterms:available> <dc:contributor>Hammer, Jan</dc:contributor> <dc:rights>deposit-license</dc:rights> <dc:language>eng</dc:language> <dc:contributor>Belzig, Wolfgang</dc:contributor> <dcterms:issued>2012</dcterms:issued> </rdf:Description> </rdf:RDF>

Dateiabrufe seit 01.10.2014 (Informationen über die Zugriffsstatistik)

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