Kondo effect of a Co atom on Cu(111) in contact with an Fe tip

Abstract

Single Co atoms, which exhibit a Kondo effect on Cu(111), are contacted with Cu and Fe tips in a low-temperature scanning tunneling microscope. With Fe tips, the Kondo effect persists with the Abrikosov-Suhl resonance significantly broadened. In contrast, for Cu-covered W tips, the resonance width remains almost constant throughout the tunneling and contact ranges. The distinct changes of the line width are interpreted in terms of modifications of the Co d state occupation owing to hybridization with the tip apex atoms.

4 pages, 3 figures

References in corpus (7)

• Exchange interaction between single magnetic adatoms
• The Kondo effect in ferromagnetic atomic contacts
• Controlling the Kondo Effect in CoCu_n Clusters Atom by Atom
• Transport spectroscopy of Kondo quantum dots coupled by RKKY interaction
• Kondo effect in single atom contacts: the importance of the atomic geometry
• Theoretical study of the conductance of ferromagnetic atomic-sized contacts
• Quantized Conductance of a Single Magnetic Atom

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