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Origin of orbital ferromagnetism and giant magnetic anisotropy at the nanoscale

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Hernando Grande, Antonio and Crespo del Arco, Patricia and Garcia, M.A. (2006) Origin of orbital ferromagnetism and giant magnetic anisotropy at the nanoscale. Physical review letters, 96 (5). ISSN 0031-9007

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Official URL: http://dx.doi.org/10.1103/PhysRevLett.96.057206


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Abstract

The origin of orbital magnetism recently observed in different nanostructured films and particles is discussed as a consequence of spin-orbit coupling. It is shown that contact potentials induced at the thin film surface by broken symmetries, as domain boundaries in self-assembled monolayers, lead to orbital states that in some cases are of large radius. The component of the angular momentum normal to the surface can reach very high values that decrease the total energy by decreasing spin-orbit interaction energy. Intraorbital ferromagnetic spin correlations induce orbital momenta alignment. The estimated values of the magnetic moments per atom are in good agreement with the experimental observations in thiol capped gold films and nanoparticles.


Item Type:Article
Additional Information:

© 2006 The American Physical Society.
A. H. is indebted to Dr. J. M. Rojo and Dr. F. Briones for
critical and helpful discussions.

Uncontrolled Keywords:Self-assembled monolayers; Au(111); Stability; Behavior
Subjects:Sciences > Physics > Materials
Sciences > Physics > Solid state physics
ID Code:41821
Deposited On:27 Mar 2017 14:44
Last Modified:27 Mar 2017 14:44

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