Journal
PHYSICAL REVIEW LETTERS
Volume 115, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.115.016802
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Funding
- Deutsche Forschungsgemeinschaft (DFG) [Sonderforschungsbereich 677, Forschergruppe 1162, Forschergruppe 1346]
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A Mn-porphyrin was contacted on Au(111) in a low-temperature scanning tunneling microscope (STM). Differential conductance spectra show a zero-bias resonance that is due to an underscreened Kondo effect according to many-body calculations. When the Mn center is contacted by the STM tip, the spectrum appears to invert along the voltage axis. A drastic change in the electrostatic potential of the molecule involving a small geometric relaxation is found to cause this observation.
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