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Temperature and magnetic field dependence of a Kondo system in the weak coupling regime

Zhang, Yong-hui and Kahle, Steffen and Herden, Tobias and Stroh, Christophe and Mayor, Marcel and Schlickum, Uta and Ternes, Markus and Wahl, Peter and Kern, Klaus. (2013) Temperature and magnetic field dependence of a Kondo system in the weak coupling regime. Nature Communications, 4. p. 2110.

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Abstract

The Kondo effect arises due to the interaction between a localized spin and the electrons of a surrounding host. Studies of individual magnetic impurities by scanning tunneling spectroscopy have renewed interest in Kondo physics; however, a quantitative comparison with theoretical predictions remained challenging. Here we show that the zero-bias anomaly detected on an organic radical weakly coupled to a Au (111) surface can be described with astonishing agreement by perturbation theory as originally developed by Kondo 60 years ago. Our results demonstrate that Kondo physics can only be fully conceived by studying both temperature and magnetic field dependence of the resonance. The identification of a spin 1/2 Kondo system is of relevance not only as a benchmark for predictions for Kondo physics but also for correlated electron materials in general.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Molecular Devices and Materials (Mayor)
UniBasel Contributors:Mayor, Marcel
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Nature Publishing Group
e-ISSN:2041-1723
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:05 Apr 2017 10:26
Deposited On:27 Mar 2014 13:13

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