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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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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0015-1E9E-F Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0015-1E9F-D
Genre: Journal Article

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 Creators:
Scott, G. D., Author
Natelson, D., Author
Kirchner, S.1, Author              
Munoz, E., Author
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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 Abstract: 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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Language(s): eng - English
 Dates: 2013-06-21
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Type: -
 Identifiers: eDoc: 668953
ISI: 000320767700001
DOI: 10.1103/PhysRevB.87.241104
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Title: Physical Review B
Source Genre: Journal
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Pages: - Volume / Issue: 87 (24) Sequence Number: 241104 Start / End Page: 241104-1 - 241104-6 Identifier: ISSN: 1098-0121