Recently, a new device to measure the orbital angular momentum (OAM) electronic spectrum after elastic/inelastic scattering in a transmission electron microscope has been introduced. We modified the theoretical framework needed to describe conventional low-loss electron energy loss spectroscopy (EELS) experiments in transmission electron microscopes (TEM) to study surface plasmons in metallic nanostructures, to allow for an OAM post selection and devise new experiments for the analysis of these excitations in nanostructures. We found that unprecedented information on the symmetries and on the chirality of the plasmonic modes can be retrieved even with limited OAM and energy resolutions.

Orbital Angular Momentum and Energy Loss Characterization of Plasmonic Excitations in Metallic Nanostructures in TEM / Zanfrognini, Matteo; Rotunno, Enzo; Frabboni, Stefano; Sit, Alicia; Karimi, Ebrahim; Hohenester, Ulrich; Grillo, Vincenzo. - In: ACS PHOTONICS. - ISSN 2330-4022. - 6:3(2019), pp. 620-627. [10.1021/acsphotonics.9b00131]

Orbital Angular Momentum and Energy Loss Characterization of Plasmonic Excitations in Metallic Nanostructures in TEM

ZANFROGNINI, MATTEO;Frabboni, Stefano;HOHENESTER, ULRICH;Grillo, Vincenzo
2019

Abstract

Recently, a new device to measure the orbital angular momentum (OAM) electronic spectrum after elastic/inelastic scattering in a transmission electron microscope has been introduced. We modified the theoretical framework needed to describe conventional low-loss electron energy loss spectroscopy (EELS) experiments in transmission electron microscopes (TEM) to study surface plasmons in metallic nanostructures, to allow for an OAM post selection and devise new experiments for the analysis of these excitations in nanostructures. We found that unprecedented information on the symmetries and on the chirality of the plasmonic modes can be retrieved even with limited OAM and energy resolutions.
2019
6
3
620
627
Orbital Angular Momentum and Energy Loss Characterization of Plasmonic Excitations in Metallic Nanostructures in TEM / Zanfrognini, Matteo; Rotunno, Enzo; Frabboni, Stefano; Sit, Alicia; Karimi, Ebrahim; Hohenester, Ulrich; Grillo, Vincenzo. - In: ACS PHOTONICS. - ISSN 2330-4022. - 6:3(2019), pp. 620-627. [10.1021/acsphotonics.9b00131]
Zanfrognini, Matteo; Rotunno, Enzo; Frabboni, Stefano; Sit, Alicia; Karimi, Ebrahim; Hohenester, Ulrich; Grillo, Vincenzo
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1177257
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