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Título

Tailoring the modulation depth in Au/Co/Au magnetoplasmonic switches

AutorMartín-Becerra, Diana ; González Sagardoy, María Ujué ; Armelles Reig, Gaspar
Fecha de publicación2010
CitaciónNanoSpain 2010
ResumenThe ability of surface plasmon polaritons (SPP) to confine optical fields beyond the diffraction limit makes them very attractive for the development of miniaturized optical devi-ces. Several passive plasmonics systems have been successfully demonstrated in the last decade, but the achievement of nanophotonic devices with advanced functionalities requires the implementation of active configurations. This needs the capability to manipulate the surface plasmon polaritons with an external agent. Among the different control agents considered so far, the magnetic field holds a robust promise since it is able to directly modify the dispersion relation of SPP [1]. This modulation lies on the non-diagonal elements of the dielectric tensor, εij. For noble metals, the ones typically used in plasmonics, these elements are unfortunately very small at field values reasonable for developing applications. Ferromagnetic metals have sizeable εij values at small magnetic fields (proportional to their magnetization), but are optically too absorbent. A smart system to develop magnetic field sensitive plasmonic devices is the use of multilayers of noble and ferromagnetic metals [2, 3].
DescripciónTrabajo presentado a NanoSpain 2010 celebrado en Málaga del 23-26 Marzo, 2010.-- D. Martín-Becerra et al... Incluye comunicación oral y presentación.
URIhttp://hdl.handle.net/10261/45213
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