Shifting the Voltage Drop in Electron Transport through a Single Molecule

Abstract

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.

arXiv comment8 pages, 8 figures (including supplemental material); accepted in Phys. Rev. Lett

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Cited by in corpus (14)

• Metallic, Magnetic and Molecular Nanocontacts
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• The Kondo Resonance Line Shape in Scanning Tunnelling Spectroscopy: Instrumental Aspects
• Orbital signatures of Fano-Kondo line shapes in STM adatom spectroscopy
• Realistic theory of electronic correlations in nanoscopic systems
• Relation between width of the zero-bias anomaly and Kondo temperaure in transport measurements through correlated quantum dots: Effect of asymmetric coupling to the leads
• Competition between quantum spin tunneling and Kondo effect
• Simulation of inelastic spin flip excitations and Kondo effect in STM spectroscopy of magnetic molecules on metal substrates
• Theory of differential conductance of Co on Cu(111) including Co s and d orbitals, and surface and bulk Cu states
• Spin current at a magnetic junction as a probe of the Kondo state
• Topological quantum phase transition in individual Fe Atoms on MoS${}_2$/Au(111)
• Temperature evolution of the Kondo peak beyond Fermi liquid theory
• Effects of valence, geometry and electronic correlations on transport in transition metal benzene sandwich molecules
• Statistical analysis of electron-induced switching of a spin-crossover complex