Electron-Beam Mapping of Vibrational Modes with Nanometer Spatial Resolution

Christian Dwyer, T. Aoki, Peter Rez, Lan-Yun Chang, T. C. Lovejoy, O. L. Krivanek

Research output: Contribution to journalArticle

29 Scopus citations

Abstract

We demonstrate that a focused beam of high-energy electrons can be used to map the vibrational modes of a material with a spatial resolution of the order of one nanometer. Our demonstration is performed on boron nitride, a polar dielectric which gives rise to both localized and delocalized electron-vibrational scattering, either of which can be selected in our off-axial experimental geometry. Our experimental results are well supported by our calculations, and should reconcile current controversy regarding the spatial resolution achievable in vibrational mapping with focused electron beams.

Original languageEnglish (US)
Article number256101
JournalPhysical Review Letters
Volume117
Issue number25
DOIs
StatePublished - Dec 15 2016

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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