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Proceedings Paper

Compact simulation guides subnanometer, femtosecond measures of energy transfer between quasiparticles and hot carriers at interfaces between metals and two-dimensional materials
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Paper Abstract

Compact computational structure-function relations are needed to examine energy transfer between confined fields and carrier dynamics at heterostructure interfaces. This work used discrete dipole approximations to analyze quasiparticle excitation and dephasing at interfaces between metals and van der Waals materials. Simulations were compared with scanning transmission electron microscopy (STEM) for energy electron loss spectroscopy (EELS) at sub-nanometer resolution and femtosecond timescale. Artifacts like direct electron-hole pair generation were avoided. Comparing simulation with experiment distinguished quasiparticle energy transfer to hot carriers at the interface, and supported development of structure-function relations between interface morphology and emergent discrete and hybrid modes.

Paper Details

Date Published: 26 September 2016
PDF: 6 pages
Proc. SPIE 9923, Physical Chemistry of Interfaces and Nanomaterials XV, 992312 (26 September 2016); doi: 10.1117/12.2238102
Show Author Affiliations
D. Keith Roper, Univ. of Arkansas (United States)
Gregory T. Forcherio, Univ. of Arkansas (United States)
Drew DeJarnette, The Univ. of Tulsa (United States)

Published in SPIE Proceedings Vol. 9923:
Physical Chemistry of Interfaces and Nanomaterials XV
Artem A. Bakulin; Robert Lovrincic; Natalie Banerji, Editor(s)

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