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Título

Giant diamagnetism of gold nanorods

Autor Hernando, Antonio ; Ayuela, Andrés ; Crespo, Patricia; Echenique, Pedro M.
Fecha de publicación 2014
EditorInstitute of Physics Publishing
Citación New Journal of Physics 16: 073043 (2014)
ResumenThe presence of giant diamagnetism in Au nanorods, NRs, is shown to be a possible consequence of field induced currents in the surface electrons. The distance, Δ, between quantum surface energy levels has been calculated as a function of the NRs radius. Note that those electrons occupying states for which Δ>kB T are steadily orbiting with constant orbital moment. The diamagnetic response induced when a field is turned on remains constant during the time the field is acting. As the NRs radius increases, Δ decreases and accordingly the electron fraction available to generate constant currents decreases, consequently the surface diamagnetic susceptibility decreases towards its bulk value. The surface electronic motion induced by the axial applied field on electrons confined into a cylindrical surface accounts with extremely good quantitative agreement for the giant diamagnetism recently measured and reported. © 2014 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.
Descripción Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence.
Versión del editorhttp://dx.doi.org/10.1088/1367-2630/16/7/073043
URI http://hdl.handle.net/10261/102747
DOI10.1088/1367-2630/16/7/073043
Identificadoresdoi: 10.1088/1367-2630/16/7/073043
issn: 1367-2630
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