Publications de Pietro Gambardella

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We have used x-ray photoemission electron microscopy (XPEEM) and x-ray absorption spectroscopy (XAS) to characterize MnxGe1-x and CryMnxGe1-x-y films grown by molecular beam epitaxy. The surface layers of the as-grown films probed by XPEEM present segregat ...

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 describe a setup for the x-ray detection of ferromagnetic resonance in the longitudinal geometry using element-specific transmission measurements. Thin magnetic film samples are placed in a static magnetic field collinear with the propagation direction ...

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 ...

Single atom magnets offer the possibility of magnetic information storage in the most fundamental unit of matter. Identifying the parameters that control the stability of their magnetic states is crucial to design novel quantum magnets with tailored proper ...

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 ...

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 ...

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 ...

Pietro Gambardella

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Surface characterization of MnxGe1-x and CryMnxGe1-x-y dilute magnetic semiconductors

Magnetic Moment and Anisotropy of Individual Co Atoms on Graphene

Longitudinal detection of ferromagnetic resonance using x-ray transmission measurements

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

Correlation between Electronic Configuration and Magnetic Stability in Dysprosium Single Atom Magnets

Equilibrium island-size distribution in one dimension

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

Element-resolved x-ray ferrimagnetic and ferromagnetic resonance spectroscopy

High magnetic moments and anisotropies for FexCo1 - x monolayers on Pt(111)

Paramagnetic Mn impurities on Ge and GaAs surfaces

Finite-sized Heisenberg chains and magnetism of one-dimensional metal systems