Phonon dispersions of silicon and germanium from first …
1994年7月15日 · Phonon dispersions of Si and Ge calculated are in excellent agreement with experiments. We present the calculation of the full phonon spectrum for silicon and germanium …
Investigation of phonon coherence and backscattering using silicon ...
2017年1月4日 · We conclude phonon coherence is unimportant for thermal transport in silicon nanomeshes with periodicities of 100 nm and higher and temperatures above 14 K, and …
Calculated phonon dispersion relation for bulk silicon compared …
We present theoretical calculations of phonon dispersion in silicon nanocrystals using an approach based on the adiabatic bond charge model. To deal with the boundary conditions, …
For many technological applications involving bulk silicon (T > 100 K), phonon–phonon scattering is the dominant mechanism governing thermal conductivity.As the char-acteristic device length …
In this work, we focus on a direct computation of anharm for crystalline silicon. We compute the phonon amplitudes from the atomic displacements and velocities obtained from a molecular …
Electron–phonon interactions in silicon: Mean free paths, related ...
2015年5月1日 · The mean free path (MFP) for electron–phonon interactions in pure silicon is an important characteristic needed both for low energy electron transport calculations using …
2015年1月21日 · The lattice dynamics of silicon has attracted ongoing attention owing to its anomalous thermal expansion, which changes from negative to positive at low temperatures. …
Direct observation of large electron–phonon interaction
2020年11月27日 · By optically exciting electron-hole pairs in a crystalline silicon membrane, we single out the effect of the phonon–carrier interaction. The enhanced phonon scattering by …
Spectral analysis of coherent and incoherent phonon transport in ...
2024年8月2日 · In this paper, we investigate the spectral thermal transport properties of silicon nanomeshes (SNMs) with large and small holes arranged periodically, aperiodically in the …
Regulating phonon transport in silicon nanofilms by resonant ...
2024年3月1日 · In this investigation, we delve into the realm of phonon resonance within silicon nanofilms (SiNFs) outfitted with resonant pillars, by employing classical molecular dynamics …