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20 August 2020 Quantum description of electron energy loss spectroscopy in crystalline films
Álvaro Rodríguez Echarri, Enok Johannes Haahr Skjølstrup, Thomas G. Pedersen, Francisco Javier García de Abajo
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Proceedings Volume 11462, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVIII; 114620K (2020) https://doi.org/10.1117/12.2568699
Event: SPIE Nanoscience + Engineering, 2020, Online Only
Abstract
We use a quantum mechanical model to study electron energy-loss spectroscopy (EELS) from crystalline noble metal films, revealing intrinsic features associated with their crystallographic orientation. Within the random-phase approximation, we employ a 1-D potential across the film that captures the main features of the electronic band structure of such different surfaces, including the electron-spill out and bulk atomic-plane corrugation. Additionally, we examine the role of vertical transitions among quantum well states, severely affected by their in-plane effective mass.
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Álvaro Rodríguez Echarri, Enok Johannes Haahr Skjølstrup, Thomas G. Pedersen, and Francisco Javier García de Abajo "Quantum description of electron energy loss spectroscopy in crystalline films", Proc. SPIE 11462, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVIII, 114620K (20 August 2020); https://doi.org/10.1117/12.2568699
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KEYWORDS
Crystals
Spectroscopy
Quantum wells
Aluminium phosphide
Electron beams
Gold
Optical properties
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