Pietro Gambardella

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Related publications (24)

Equilibrium island-size distribution in one dimension

Harald Brune, Klaus Kern, Pietro Gambardella

We derive an analytical expression for the size distribution of monoatomic wires in the framework of a one-dimensional lattice gas model at thermodynamic equilibrium. The theoretical results are compared with the size distribution of one-dimensional Ag wir ...

2006

Paramagnetic Mn impurities on Ge and GaAs surfaces

Harald Brune, Pietro Gambardella

Individual Mn impurities deposited on Ge(100), Ge(111), and GaAs(110) substrates present magnetic moments significantly larger compared to the average Mn magnetization in bulklike Ga1-xMnxAs and MnxGe1-x dilute magnetic semiconductors. The Mn magnetic mome ...

2005

X-ray ferromagnetic resonance spectroscopy

Harald Brune, Radivoje Popovic, Giovanni Boero, Pietro Gambardella, Stefano Rusponi

We present a method to measure continuous-wave ferromagnetic resonance (FMR) spectra based on the core-level absorption of circularly polarized x rays. The technique is demonstrated by using a monochromatic x-ray beam incident on an yttrium-iron-garnet sam ...

2005

Magnetic anisotropy from single atoms to large monodomain islands of Co/]Pt(111)

Nicolas Weiss, Harald Brune, Pietro Gambardella, Stefano Rusponi

By studying the magnetic behavior of self-assembled Co islands on a single-crystal metal surface, Pt(111), we show how the magnetic anisotropy evolves from isolated atoms to monolayer islands and films. Single Co adatoms are found to have a giant magnetocr ...

2005

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