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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 14 — Jul. 2, 2012
  • pp: 15024–15034

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

Zeinab Mohammadi, Cole P. Van Vlack, Stephen Hughes, Jens Bornemann, and Reuven Gordon  »View Author Affiliations


Optics Express, Vol. 20, Issue 14, pp. 15024-15034 (2012)
http://dx.doi.org/10.1364/OE.20.015024


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Abstract

The 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.

© 2012 OSA

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(300.6330) Spectroscopy : Spectroscopy, inelastic scattering including Raman
(160.3918) Materials : Metamaterials

ToC Category:
Optics at Surfaces

History
Original Manuscript: April 13, 2012
Revised Manuscript: May 25, 2012
Manuscript Accepted: June 11, 2012
Published: June 20, 2012

Citation
Zeinab Mohammadi, Cole P. Van Vlack, Stephen Hughes, Jens Bornemann, and Reuven Gordon, "Vortex electron energy loss spectroscopy for near-field mapping of magnetic plasmons," Opt. Express 20, 15024-15034 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-14-15024


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