26 September 2016Compact 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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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.
D. Keith Roper,Gregory T. Forcherio, andDrew DeJarnette
"Compact simulation guides subnanometer, femtosecond measures of energy transfer between quasiparticles and hot carriers at interfaces between metals and two-dimensional materials", Proc. SPIE 9923, Physical Chemistry of Interfaces and Nanomaterials XV, 992312 (26 September 2016); https://doi.org/10.1117/12.2238102
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D. Keith Roper, Gregory T. Forcherio, Drew DeJarnette, "Compact simulation guides subnanometer, femtosecond measures of energy transfer between quasiparticles and hot carriers at interfaces between metals and two-dimensional materials," Proc. SPIE 9923, Physical Chemistry of Interfaces and Nanomaterials XV, 992312 (26 September 2016); https://doi.org/10.1117/12.2238102