Publication

Controlling the Spin of Co Atoms on Pt(111) by Hydrogen Adsorption

Harald Brune, Pietro Gambardella, Laurent Claude
2015
Journal Articles

Abstract

We investigate the effect of H adsorption on the magnetic properties of individual Co atoms on Pt(111) with scanning tunneling microscopy. For pristine Co atoms, we detect no inelastic features in the tunnel spectra. Conversely, CoH and CoH2 show a number of low-energy vibrational features in their differential conductance identified by isotope substitution. Only the fcc-adsorbed species present conductance steps of magnetic origin, with a field splitting identifying their effective spin as S-eff = 2 for CoH and 3/2 for CoH2. The exposure to H-2 and desorption through tunnel electrons allow the reversible control of the spin in half-integer steps. Because of the presence of the surface, the hydrogen-induced spin increase is opposite to the spin sequence of CoHn molecules in the gas phase.

Official source

https://infoscience.epfl.ch/entities/publication/f87180c2-8e10-48ec-bf17-bb53dea4fb93

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Harald Brune, Pietro Gambardella, Laurent Claude
2015
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/f87180c2-8e10-48ec-bf17-bb53dea4fb93

About this result

Related concepts (32)

Magnetic field

A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials. A moving charge in a magnetic field experiences a force perpendicular to its own velocity and to the magnetic field. A permanent magnet's magnetic field pulls on ferromagnetic materials such as iron, and attracts or repels other magnets.

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Controlling the Spin of Co Atoms on Pt(111) by Hydrogen Adsorption

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