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High Magneto‐Optical Activity and Low Optical Losses in Metal‐Dielectric Au/Co/Au–SiO 2 Magnetoplasmonic Nanodisks
Author(s) -
Banthí Juan Carlos,
MenesesRodríguez David,
García Fernando,
González María Ujué,
GarcíaMartín Antonio,
Cebollada Alfonso,
Armelles Gaspar
Publication year - 2012
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201103634
Subject(s) - materials science , plasmon , excitation , dielectric , optoelectronics , ferromagnetism , electromagnetic field , surface plasmon , magnetic field , condensed matter physics , physics , quantum mechanics
Metal‐dielectric Au‐Co‐SiO 2 magnetoplasmonic nanodisks are found to exhibit large magneto‐optical activity and low optical losses. The internal architecture of the nanodisks is such that, in resonant conditions, the electromagnetic field undertakes a particular spatial distribution. This makes it possible to maximize the electromagnetic field at the magneto‐optically active layers and minimize it in the other, optically lossy ones.