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Magnetism in Rh clusters under hydrostatic deformations |
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| Authors: | EO Berlanga-Ramırez F Aguilera-Granja A Dıaz-Ortiz A Vega |
| Institution: | (1) Instituto de Fısica, Universidad Autónoma de San Luis Potosı, 78000 San Luis Potosı, S.L.P., Mexico, MX;(2) Instituto Potosino de Investigación Cientıfica y Tecnológica, Apartado Postal 3-74 Tangamanga, 78231 San Luis Potosı, S.L.P., Mexico, MX;(3) Departamento de Fısica Teórica, Atómica, Molecular y Nuclear, Universidad de Valladolid, 47011 Valladolid, Spain, ES |
| Abstract: | The magnetic behavior of rhodium clusters RhN (N = 4-38) under hydrostatic deformations was investigated. The starting cluster structures were obtained from an evolutionary search algorithm applied to a Gupta potential. The spin-polarized electronic structure and related magnetic properties were calculated using a self-consistent spd tight-binding Hamiltonian within the unrestricted Hartree-Fock approximation. The magnetic behavior was analyzed in terms of the interdependence between the geometrical parameters and the electronic structure. Anomalous magnetic effects were found in some cases. Received 5 August 2002 / Received in final form 10 January 2003 Published online 4 March 2003 RID="a" ID="a"e-mail: berlanga@dec1.ifisica.uaslp.mx |
| Keywords: | PACS 36 40 Cg Electronic and magnetic properties of clusters – 61 46 +w Nanoscale materials: clusters nanoparticles nanotubes and nanocrystals |
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