Microscopic Theory of the Single Impurity Surface Kondo Resonance

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 (STM), 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.

arXiv commentNew version of the original manuscript with extended discussions on the problem of wavefunction orthogonality, the limitations of the theory, more figures related to the STM experiments, and one correction to an earlier result. Accepted for publication in Phys.Rev.B

References in corpus (3)

• Kondo effect in an integer-spin quantum dot
• Theory of the Fano Resonance in the STM Tunneling Density of States due to a Single Kondo Impurity
• Nonequilibrium theory of scanning tunneling spectroscopy via adsorbate resonances: nonmagnetic and Kondo impurities

Cited by in corpus (16)

• Multi-impurity Anderson model for quantum dots coupled in parallel
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• Nonequilibrium magnetotransport through a quantum dot: An interpolative perturbative approach
• Many-body electronic structure and Kondo properties of cobalt-porphyrin molecules
• First-principles Calculation of the Single Impurity Surface Kondo Resonance
• Nonequilibrium dynamics of a singlet-triplet Anderson impurity near the quantum phase transition
• Single-Atom Gating of Quantum State Superpositions
• The effective Kondo model for a trimer on a metallic surface
• Quantifying the leading role of the surface state in the Kondo effect of Co/Ag(111)
• Kondo effect of Co adatoms on Ag monolayers on noble metal surfaces
• Theory of oscillations in the STM conductance resulting from subsurface defects (Review Article)
• Surface states influence in the conductance spectra of Co adsorbed on Cu(111)
• The signature of subsurface Kondo impurities in the local tunnel current
• Non-perturbative effects and indirect exchange interaction between quantum impurities on metallic (111) surfaces
• Towards a microscopic description of dimer adsorbates on metallic surfaces