Orbital magnetism in transition-metal clusters: from Hund's rules to bulk quenching.

Phys Rev Lett

Instituto de Física, Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico.

Published: June 2003

The local and average orbital moments of transition-metal (TM) clusters are determined bridging the gap between atomic Hund's rules and solid-state quenching. A remarkable enhancement of is revealed in agreement with recent measurements. In small Ni(N) (N< or =10), represents (20-40)% of the total magnetization and is therefore crucial for the comparison between theory and experiment. Larger clusters (N> or =150) show nearly bulklike quenching at the interior but retain a considerable surface enhancement. Trends for different TM's are discussed.

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http://dx.doi.org/10.1103/PhysRevLett.90.226402DOI Listing

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