Vortex electron energy loss spectroscopy for near-field mapping of magnetic plasmons

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dc.contributor.authorMohammadi, Zeinab
dc.contributor.authorVan Vlack, Cope P.
dc.contributor.authorHughes, Stephen
dc.contributor.authorBornemann, Jens
dc.contributor.authorGordon, Reuven
dc.date.accessioned2022-04-01T17:05:37Z
dc.date.available2022-04-01T17:05:37Z
dc.date.copyright2012en_US
dc.date.issued2012
dc.description.abstractThe theory of vortex electron beam electron energy loss spectroscopy (EELS), or vortex-EELS for short, is presented. This theory is applied, using Green function calculations within the finite-difference time-domain method, to calculate spatially resolved vortex-EELS maps of a metal split ring resonator (SRR). The vortex-EELS scattering cross section for the SRR structure is within an order of magnitude of conventional EELS typically for metal nanoparticles. This is promising in terms of feasibility for future measurements to map out the local magnetic response of metal nanostructures and to characterize their magnetic plasmon response in applications, including metamaterials.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipThis work was supported by a National Sciences and Engineering Research Council of Canada (NSERC) Strategic Project Grant.en_US
dc.identifier.citationMohammadi, Z., Van Vlack, C. P., Hughes, S., Bornemann, J., & Gordon, R. (2012). Vortex electron energy loss spectroscopy for near-field mapping of magnetic plasmons. Optics Express, 20(14), 15024-15034. https://doi.org/10.1364/OE.20.015024en_US
dc.identifier.urihttps://doi.org/10.1364/OE.20.015024
dc.identifier.urihttp://hdl.handle.net/1828/13839
dc.language.isoenen_US
dc.publisherOptics Expressen_US
dc.subjectSurface plasmons
dc.subjectMetamaterials
dc.subjectSpectroscopy, inelastic scattering including Raman
dc.subject.departmentDepartment of Electrical and Computer Engineering
dc.titleVortex electron energy loss spectroscopy for near-field mapping of magnetic plasmonsen_US
dc.typeArticleen_US

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