Phonon Spectroscopy at Atomic Resolution.

  title={Phonon Spectroscopy at Atomic Resolution.},
  author={Fredrik S. Hage and Demie M. Kepaptsoglou and Quentin M. Ramasse and Leslie J. Allen},
  journal={Physical review letters},
  volume={122 1},
Advances in source monochromation in transmission electron microscopy have opened up new possibilities for investigations of condensed matter using the phonon-loss sector of the energy-loss spectrum. Here, we explore the spatial variations of the spectrum as an atomic-sized probe is scanned across a thin flake of hexagonal boron nitride. We demonstrate that phonon spectral mapping of atomic structure is possible. These results are consistent with a model for the quantum excitation of phonons… 

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