THE LATEST NEWS ABOUT US, GENERAL AND SPECIFIC OF EACH GROUP
- Nov 20, 2008 Kondo Effect in Single Atom Contacts: The Importance of the Atomic Geometry
- Nov 08, 2008 Label-Free Pathogen Detection with Sensor Chips Assembled from Peptide Nanotubes
- Oct 15, 2008 Mónica Lira-Cantu, Best Poster Award
- Oct 08, 2008 Cold Consolidation of Metal-Ceramic Nanocomposite Powders with Large Ceramic Fractions
- Sep 06, 2008 Amplitude spectroscopy of a solid-state artificial atom
- Jun 06, 2008 Unified Description of Inelastic Propensity Rules for Electron Transport through Nanoscale Junctions
- Apr 15, 2008 SCIENCE PUBLICATION: Subnanometer Motion of Cargoes Driven by Thermal Gradients along Carbon Nanotubes
- Mar 30, 2008 The environment of graphene probed by electrostatic force microscopy
- Mar 12, 2008 Unusual Strain Accommodation and Conductivity Enhancement by Structure Modulation Variations in Sr4Fe6O12+ Epitaxial Films
- Feb 22, 2008 Valence-tautomeric metal-organic nanoparticles
- Jan 30, 2008 Reducing the Molecule-Substrate Coupling in C60-Based Nanostructures by Molecular Interactions
Nov 20, 2008
Kondo Effect in Single Atom Contacts: The Importance of the Atomic Geometry
Pietro Gambardella, leader of the Atomic Manipulation and Spectroscopy group at CIN2 (ICN-CSIC), together with other researchers published the paper 'Kondo Effect in Single Atom Contacts: The Importance of the Atomic Geometry' on Phys. Rev. Lett. 101, 216802 (2008).
Co single atom junctions on copper surfaces are studied by scanning tunneling microscopy and ab initio calculations. The Kondo temperature of single cobalt atoms on the Cu(111) surface has been measured at various tip-sample distances ranging from tunneling to the point contact regime. The experiments show a constant Kondo temperature for a whole range of tip-substrate distances consistently with the predicted energy position of the spin-polarized d levels of Co. This is in striking difference to experiments on Co/Cu(100) junctions, where a substantial increase of the Kondo temperature has been found. Our calculations reveal that the different behavior of the Co adatoms on the two Cu surfaces originates from the interplay between the structural relaxations and the electronic properties in the near-contact regime.