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

Yong-hui Zhang, Steffen Kahle, Tobias Herden, Christophe Stroh, Marcel Mayor, Uta Schlickum, Markus Ternes, Peter Wahl, Klaus Kern

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96 Citations (Scopus)
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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.
Original languageEnglish
Article number2110
Number of pages6
JournalNature Communications
Volume4
DOIs
Publication statusPublished - 1 Jul 2013

Keywords

  • Kondo Effect
  • Scanning Tunneling Microscopy
  • Scanning Tunneling Spectroscopy
  • Single Molecule Spectroscopy

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