Giant Magnetic Anisotropy of Single Cobalt Atoms and Nanoparticles

Gambardella, Pietro; Rusponi, S.; Veronese, M.; S. Dhesi, S.; Grazioli, Cesare; Dallmeyer, A.; Cabria, I.; Zeller, R.; H. Dederichs, P.; Kern, Klaus; Carbone, C.; Brune, Harald

doi:10.1126/science.1082857

Public

Giant Magnetic Anisotropy of Single Cobalt Atoms and Nanoparticles

Published in Science • May 15, 2003

Authors:

Pietro Gambardella

S. Rusponi

M. Veronese

Abstract

The isotropic magnetic moment of a free atom is shown to develop giant magnetic anisotropy energy due to symmetry reduction at an atomically ordered surface. Single cobalt atoms deposited onto platinum (111) are found to have a magnetic anisotropy energy of 9 millielectron volts per atom arising fro...

Subject

Magnetic anisotropy

Magnetic moment

Anisotropy energy

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