Phonon Spectrum in a Nanoparticle Mechanically Coupled to a Substrate

Preprint

26 June 2001

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0106544

Abstract

We calculate the vibrational density-of-states in an insulating nanoparticle that is in weak mechanical contact with a semi-infinite substrate. The work is motivated by a recent experiment by Yang et al., where the low-energy phonon density-of-states of Y2O3 nanoparticles doped with Eu was measured. Preliminary results presented here, based on the conventional quasiparticle-pole approximation for the phonon propagator, are in reasonable agreement with experiment.

Keywords

NANOPARTICLE MECHANICALLY
VIBRATIONAL DENSITY
MECHANICAL CONTACT
DENSITY OF STATES
PHONON SPECTRUM
MOTIVATED
SPECTRUM

All Related Versions

Version 1, 2001-06-26, ArXiv
Published version: Journal of Luminescence, 94-95, 747.

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