Conductance-Driven Kondo Effect in a Single Cobalt Atom

Abstract

A low-temperature scanning tunneling microscope is employed to build a junction comprising a Co atom bridging a copper-coated tip and a Cu(100) surface. An Abrikosov-Suhl-Kondo resonance is evidenced in the differential conductance and its width is shown to vary exponentially with the ballistic conductance regardless of the tip structure. Using a theoretical description based on the Anderson model, we show that the Kondo effect and the conductance are related through the atomic relaxations affecting the environment of the Co atom.

5 pages, 4 figures, final version

References in corpus (7)

• Mechanical Control of Spin States in Spin-1 Molecules and the Underscreened Kondo Effect
• Tuning the Kondo effect with a mechanically controllable break junction
• Long-range Kondo signature of a single magnetic impurity
• A Tunable Two-impurity Kondo system in an atomic point contact
• Controlling the Kondo Effect in CoCu_n Clusters Atom by Atom
• Kondo effect in single atom contacts: the importance of the atomic geometry
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• Orbital signatures of Fano-Kondo line shapes in STM adatom spectroscopy
• Kondo resonance of a Co atom exchange coupled to a ferromagnetic tip
• From tunneling to contact in a magnetic atom: the non-equilibrium Kondo effect
• Co adatoms on Cu surfaces: ballistic conductance and Kondo temperature
• 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
• Site-dependent evolution of electrical conductance from tunneling to atomic point contact
• Non-equilibrium spin-current detection with a single Kondo impurity
• Theory of differential conductance of Co on Cu(111) including Co s and d orbitals, and surface and bulk Cu states
• Surface states influence in the conductance spectra of Co adsorbed on Cu(111)
• Topological quantum phase transition in individual Fe Atoms on MoS${}_2$/Au(111)
• Single-Co Kondo effect in atomic Cu wires on Cu(111)
• Transport properties of Co in Cu(100) from first principles