Publications de Alexandre Dmitriev

Oxygen Dissociation by Concerted Action of Di-Iron Centers in Metal-Organic Coordination Networks at Surfaces: Modeling Non-Heme Iron Enzymes

Klaus Kern, Pietro Gambardella, Alexandre Dmitriev, Sebastian Stepanow

The high chemical reactivity of unsaturated metal sites is a key factor for the development of novel devices with applications in sensor engineering and catalysis. It is also central in the research for sustainable energy concepts, e.g., the efficient prod ...

American Chemical Society (ACS)2011

Long-Distance Indirect Excitation of Nanoplasmonic Resonances

Klaus Kern, Alexandre Dmitriev, Moritz Esslinger

In nanoscopic systems, size, geometry, and arrangement are the crucial determinants of the light-matter interaction and resulting nanoparticles excitation. At optical frequencies, one of the most prominent examples is the excitation of localized surface pl ...

American Chemical Society (ACS)2011

Supramolecular control of the magnetic anisotropy in two-dimensional high-spin Fe arrays at a metal interface

Harald Brune, Klaus Kern, Pietro Gambardella, Sylvain Clair, Alexandre Dmitriev, Sebastian Stepanow, Magalí Alejandra Lingenfelder

Magnetic atoms at surfaces are a rich model system for solid-state magnetic bits exhibiting either classical(1,2) or quantum(3,4) behaviour. Individual atoms, however, are difficult to arrange in regular patterns(1-5). Moreover, their magnetic properties a ...

Nature Publishing Group2009

Direct Near-Field Optical Imaging of Higher Order Plasmonic Resonances

Klaus Kern, Alexandre Dmitriev

We map in real space and by purely optical means near-field optical information of localized surface plasmon polariton (LSPP) resonances excited in nanoscopic particles. We demonstrate that careful polarization control enables apertureless scanning near-fi ...

American Chemical Society (ACS)2008

Plasmonic nanostructures in aperture-less scanning near-field optical microscopy (aSNOM)

Klaus Kern, Alexandre Dmitriev, Ralf Thomas Weitz

Apertureless scanning near-field optical microscopy offers superb spatial resolution, but interpreting the recoreded signal can still be a challenge. Especially images of eigenmodes in plasmonic nanostructures are very often obscured by concurrent scatteri ...

2008

Design principles for low-dimensional supramolecular systems at metal surfaces

Alexandre Dmitriev

EPFL2003