Quantum effects of thermal conductance through atomic chains

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buir.contributor.authorÇıracı, Salim
buir.contributor.orcidÇıracı, Salim|0000-0001-8023-9860
dc.citation.epage1254155en_US
dc.citation.issueNumber12en_US
dc.citation.spage1254151en_US
dc.citation.volumeNumber63en_US
dc.contributor.authorOzpineci, A.en_US
dc.contributor.authorÇıracı, Salimen_US
dc.date.accessioned2016-02-08T10:34:53Z
dc.date.available2016-02-08T10:34:53Z
dc.date.issued2001en_US
dc.departmentDepartment of Physicsen_US
dc.description.abstractWe present a formalism for an atomic scale study of phononic heat transfer. The expression of thermal energy current can be cast in the Landauer form and incorporates the transmission coefficient explicitly. Calculation of the thermal conductance of a monoatomic chain of N atoms between two reservoirs shows interesting quantum features. The conductance density appears as Lorentzian type resonances at the eigenfrequencies of the chain. At low-temperature limit the discrete vibrational frequency spectrum of a "soft" chain may reflect on the thermal conductance by giving rise to a sudden increase. At room temperature, the conductance through a "stiff" chain may oscillate with the number of chain atoms. The obtained quantum features are compared with similar effects found in the quantized electrical conductance.en_US
dc.description.provenanceMade available in DSpace on 2016-02-08T10:34:53Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 70227 bytes, checksum: 26e812c6f5156f83f0e77b261a471b5a (MD5) Previous issue date: 2001en
dc.identifier.issn0163-1829
dc.identifier.urihttp://hdl.handle.net/11693/24823
dc.language.isoEnglishen_US
dc.source.titlePhysical Review B - Condensed Matter and Materials Physicsen_US
dc.subjectAtomen_US
dc.subjectDensityen_US
dc.subjectElectric conductivityen_US
dc.subjectEnergyen_US
dc.subjectFrequency analyzeren_US
dc.subjectHeat transferen_US
dc.subjectLow temperatureen_US
dc.subjectMathematical analysisen_US
dc.subjectOscillationen_US
dc.subjectQuantum mechanicsen_US
dc.subjectTemperature dependenceen_US
dc.subjectThermal conductivityen_US
dc.titleQuantum effects of thermal conductance through atomic chainsen_US
dc.typeArticleen_US

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