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  Transport characterization of Kondo-correlated single-molecule devices

Scott, G. D., Natelson, D., Kirchner, S., & Munoz, E. (2013). Transport characterization of Kondo-correlated single-molecule devices. Physical Review B, 87(24): 241104, pp. 241104-1-241104-6. doi:10.1103/PhysRevB.87.241104.

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 Urheber:
Scott, G. D., Autor
Natelson, D., Autor
Kirchner, S.1, Autor           
Munoz, E., Autor
Affiliations:
1Stefan Kirchner, cross-PKS/CPfS theory group, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863475              

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 Zusammenfassung: A single-molecule break junction device serves as a tunable model system for probing the many-body Kondo state. The low-energy properties of this state are commonly described in terms of a Kondo model, where the response of the system to different perturbations is characterized by a single emergent energy scale, k(B)T(K). Comparisons between different experimental systems have shown issues with numerical consistency. With a new constrained analysis examining the dependence of conductance on temperature, bias, and magnetic field simultaneously, we show that these deviations can be resolved by properly accounting for background, non-Kondo contributions to the conductance that are often neglected. We clearly demonstrate the importance of these non-Kondo conduction channels by examining transport in devices with total conductances exceeding the theoretical maximum due to Kondo-assisted tunneling alone.

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Sprache(n): eng - English
 Datum: 2013-06-21
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
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 Art der Begutachtung: -
 Identifikatoren: eDoc: 668953
ISI: 000320767700001
DOI: 10.1103/PhysRevB.87.241104
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Titel: Physical Review B
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 87 (24) Artikelnummer: 241104 Start- / Endseite: 241104-1 - 241104-6 Identifikator: ISSN: 1098-0121