Manipulation of Kondo Effect via Two-Dimensional Molecular Self-Assembly

Abstract

We report manipulation of a Kondo resonance originated from the spin-electron interactions between a two-dimensional molecular assembly of TBrPP-Co molecules and a Cu(111) surface at 4.6 K using a low temperature scanning tunneling microscope. By manipulating nearest-neighbor molecules with a scanning tunneling microscope tip we are able to tune the spin-electron coupling of the center molecule inside a small hexagonal molecular assembly in a controlled step-by-step manner. The Kondo temperature increases from 105 to 170 K with a decreasing the number of nearest neighbor molecules from six to zero. This Kondo temperature variation is originated from the scattering of surface electrons by the molecules located at the edges of the molecular layer, which reduces spin-electron coupling strength for the molecules inside the layer. Investigations on different molecular arrangements indicate that the observed Kondo resonance is independent on the molecular lattice.

Phys. Rev. Lett. in press

References in corpus (2)

• Orbital Kondo effect in carbon nanotubes
• Manipulating Kondo Temperature via Single Molecule Switching

Cited by in corpus (18)

• Visualizing the spin of individual molecules
• Reversible Single Spin Control of Individual Magnetic Molecule by Hydrogen Atom Adsorption
• Enhancement of the Kondo effect through Rashba spin-orbit interactions
• Orbital-selective spin excitation of a magnetic porphyrin
• Quantum transport simulation scheme including strong correlations and its application to organic radicals adsorbed on gold
• The Kondo Resonance Line Shape in Scanning Tunnelling Spectroscopy: Instrumental Aspects
• Many-body electronic structure and Kondo properties of cobalt-porphyrin molecules
• Multi-orbital Non-Crossing Approximation from maximally localized Wannier functions: the Kondo signature of copper phthalocyanine on Ag (100)
• Orbital signatures of Fano-Kondo line shapes in STM adatom spectroscopy
• Non-Kondo zero-bias anomaly in quantum wires
• Kondo effect in transport through molecules adsorbed on metal surfaces: from Fano dips to Kondo peaks
• Valence fluctuations in a lattice of magnetic molecules: application to iron(II) phtalocyanine molecules on Au(111)
• From Kondo to local singlet state in graphene nanoribbons with magnetic impurities
• Quantum manipulation via atomic-scale magnetoelectric effects
• Stable $\pi$-radical 2,2-diphenyl-1-picrylhydrazyl (DPPH) adsorbed at the elbows of $22\times \sqrt{3}$ reconstructed Au(111)
• Single-Co Kondo effect in atomic Cu wires on Cu(111)
• Surface states and related quantum interference in \textit{ab initio} electron transport
• Parity oscillations of Kondo temperature in a single molecule break junction