Microscopic theory of the single impurity surface Kondo resonance

Chiung-Yuan Lin*, A. H.Castro Neto, B. A. Jones

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

We develop a microscopic theory of the single impurity Kondo effect on a metallic surface. We calculate the hybridization energies for the Anderson Hamiltonian of a magnetic impurity interacting with surface and bulk states and show that, contrary to the Kondo effect of an impurity in the bulk, the hybridization matrix elements are strongly dependent on the momentum around the Fermi surface. Furthermore, by calculating the tunneling conductance of a scanning tunneling microscope, we show that when the magnetic impurity is located at a surface the Kondo effect can occur with equal strength between bulk and surface states. We compare our results with recent experiments of Co impurities in Cu(111) and Cu(100) surfaces and find good quantitative agreement.

Original languageEnglish
Article number035417
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume71
Issue number3
DOIs
StatePublished - 1 Jan 2005

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