Publications de François Patthey

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We determine the magnetic properties of individual Co atoms adsorbed on graphene (G) with x-ray absorption spectroscopy and magnetic circular dichroism. The magnetic ground state of Co adatoms strongly depends on the choice of the metal substrate on which graphene is grown. Cobalt atoms on G/Ru(0001) feature exceptionally large orbital and spin moments, as well as an out-of-plane easy axis with large magnetic anisotropy. Conversely, the magnetic moments are strongly reduced for Co/G/Ir(111), and the magneti

Electrons trapped in field emission resonances (FERs) in front of a Ag(100) surface covered with ultrathin NaCl islands are probed by scanning tunneling spectroscopy. The eigenstates in the potential well formed between the tip and the sample are calculate ...

Spin-polarized scanning tunneling microscopy (SP-STM) measures magnetoresistance with atomic resolution. While various methods for achieving SP probes have been developed, each is limited with respect to fabrication, performance, and operating conditions. ...

We report on low-temperature scanning tunneling microscopy observations demonstrating that individual Ti atoms on hexagonal boron nitride dissociate and adsorb hydrogen without measurable reaction barrier. The clean and hydrogenated states of the adatoms a ...

We report on the magnetic properties of single Co atoms on graphene on Pt(111). By means of scanning tunneling microscopy spin-excitation spectroscopy, we infer a magnetic anisotropy of K = -8.1 meV with out-of-plane hard axis and a magnetic moment of 2.2 ...

We demonstrate rotational excitation spectroscopy with the scanning tunneling microscope for physisorbed H-2 and its isotopes HD and D-2. The observed excitation energies are very close to the gas phase values and show the expected scaling with the moment of inertia. Since these energies are characteristic for the molecular nuclear spin states we are able to identify the para and ortho species of hydrogen and deuterium, respectively. We thereby demonstrate nuclear spin sensitivity with unprecedented spatial

We report on the strengths and limitations of scanning tunnelling microscopy (STM) when used for characterising atomic-scale features of quasi two-dimensional materials, such as graphene and single layers of hexagonal boron nitride, which may present stron ...

Electrical contacts between nanoengineered systems are expected to constitute the basic building blocks of future nanoscale electronics. However, the accurate characterization and understanding of electrical contacts at the nanoscale is an experimentally c ...

Upon submonolayer deposition of Azure A molecules onto reconstructed Au(1 1 1), two-dimensional quasi-rectangular islands are observed by low-temperature scanning tunneling microscopy. Strikingly, the 22 x root 3 reconstruction with alternating hexagonal c ...

Using the highly localized current of electrons tunneling through a double barrier scanning tunneling microscope junction, we excite luminescence from a selected C60 mol. in the surface layer of fullerene nanocrystals grown on an ultrathin NaCl film on Au( ...

François Patthey

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Tailoring the Magnetism of Co Atoms on Graphene through Substrate Hybridization

Local work function changes determined by field emission resonances: NaCl/Ag(100)

Antiferromagnetic MnNi tips for spin-polarized scanning probe microscopy

Quantifying residual hydrogen adsorption in low-temperature STMs

Two-dimensional tiling by rubrene molecules self-assembled in supramolecular pentagons, hexagons, and heptagons on a Au(111) surface

Magnetic Moment and Anisotropy of Individual Co Atoms on Graphene

Distinction of Nuclear Spin States with the Scanning Tunneling Microscope

Giant apparent lattice distortions in STM images of corrugated sp2-hybridised monolayers

Dynamical Coulomb Blockade Observed in Nanosized Electrical Contacts

Modified herringbone reconstruction on Au(111) induced by self-assembled Azure A islands

Gap opening in the surface electronic structure of graphite induced by adsorption of alkali atoms: Photoemission experiments and density functional calculations

Fluorescence and phosphorescence from individual C-60 molecules excited by local electron tunneling

Conservation of chirality in a hierarchical supramolecular self-assembled structure with pentagonal symmetry

Thermal and Magnetic-Field Stability of Holmium Single-Atom Magnets

Scanning tunneling microscopy study on a BC3 covered NbB2(0001) surface

Local work function Moire pattern on ultrathin ionic films: NaCl on Ag(100)

Probing and locally modifying the intrinsic electronic structure and the conformation of supported nonplanar molecules

Spectroscopic Evidence for an Unrealized Heavy-Electron State in Ceal2

Layer-by-Layer Resolved Surface-States of Ultrathin Silver Islands on Graphite - a Photoemission-Study

Characterization of the Heavy-Fermion System Cecu6 by High-Energy Electron Spectroscopies