Atomic resolution imaging using electron energy-loss phonon spectroscopy
NR Lugg, BD Forbes, SD Findlay, LJ Allen
PHYSICAL REVIEW B | AMER PHYSICAL SOC | Published : 2015
Recent developments have improved the attainable energy resolution in electron energy-loss spectroscopy in aberration-corrected scanning transmission electron microscopy to the order of 10 meV. In principle, this allows spectroscopy and imaging of crystals using the phonon sector of the energy-loss spectrum at atomic resolution, a supposition supported by recent simulations for molecules. Here we show that the "quantum excitation of phonons" model encapsulates the physics necessary to simulate the atomic resolution imaging of crystals based on phonon excitation and we explore the predictions of such simulations.
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Awarded by Australian Research Council
Awarded by Grants-in-Aid for Scientific Research
We would like to thank J. Verbeeck and N. Gauquelin for stimulating discussions. N.R.L. was supported by the Japan Society for the Promotion of Science (JSPS) for this work. This research was supported under the Australian Research Council's Discovery Projects funding scheme (Projects No. DP110102228 and No. DP140102538).