Optical phonons of circular wires in porous GaP View Full Text


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Article Info

DATE

2001-09

AUTHORS

A. I. Belogorokhov, L. I. Belogorokhova

ABSTRACT

The reflection spectra of porous gallium phosphide samples are investigated in the far infrared region of wave numbers (10–700 cm−1). In addition of the longitudinal and transverse optical phonon modes corresponding to the bulk material, additional vibrational modes are detected. Their number and spectral position are correctly described by a model of a dispersive dielectric medium under the assumption that porous gallium phosphide is formed by crystallites whose shape is close to cylindrical. It is concluded that such vibrational modes are optical phonons confined by the volume of the quantum wire. The experimental optical reflection spectra are used to obtain estimates of the average diameter of nanocrystallites forming the porous GaP layer. More... »

PAGES

1765-1769

Journal

TITLE

Physics of the Solid State

ISSUE

9

VOLUME

43

Author Affiliations

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/1.1402237

DOI

http://dx.doi.org/10.1134/1.1402237

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1044455015


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