We report an ab initio investigation of fast electron energy-loss probability in silicon and germanium nanowires. Computed energy loss spectra are characterized by a strong enhancement of the direct interband transition peak at low energy, in good agreement with experimental data. Our calculations predict an important diameter dependence of the bulk volume plasmon peak for very thin wires which is consistent with the blue shift observed experimentally in thicker wires.
Palummo, M., Hogan, C., Ossicini, S. (2015). Ab initio energy loss spectra of Si and Ge nanowires. PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 17(43), 29085-29089 [10.1039/c5cp05074j].
Ab initio energy loss spectra of Si and Ge nanowires
PALUMMO, MAURIZIA;
2015-01-01
Abstract
We report an ab initio investigation of fast electron energy-loss probability in silicon and germanium nanowires. Computed energy loss spectra are characterized by a strong enhancement of the direct interband transition peak at low energy, in good agreement with experimental data. Our calculations predict an important diameter dependence of the bulk volume plasmon peak for very thin wires which is consistent with the blue shift observed experimentally in thicker wires.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
