Optical Study of MBE Grown Undoped Si-Si_{1-x}Ge_{x}/Si Superlattices

• Authors: V. Gnezdilov , M. Mironov , V. Yshakov , O. Mironov , P. Phillips , E. Parker
• Languages of publication: EN

Abstracts

EN

Raman spectroscopy and spectroscopic ellipsometry have been used to characterize Si/Si_{0.78}Ge_{0.22} superlattices grown by molecular beam epitaxy on (001)Si at different substrate temperatures. The results are interpreted to give information on material and interface quality, layer thicknesses, and state of strain. The observed frequencies of zone-folded longitudinal acoustic phonons in a high quality sample agree well with those calculated using Rytov's theory of acoustic vibrations in layered media.

Keywords

EN

78.30.-j; 78.66.-w; 78.66.Db

Discipline

• 78.66.-w: Optical properties of specific thin films(for optical properties of low-dimensional, mesoscopic, and nanoscale materials, see 78.67.-n; for optical properties of surfaces, see 78.68.+m)
• 78.66.Db: Elemental semiconductors and insulators
• 78.30.-j: Infrared and Raman spectra(for vibrational states in crystals and disordered systems, see 63.20.-e and 63.50.-x, respectively; for Raman spectra of superconductors, see 74.25.nd)

• Journal: Acta Physica Polonica A
• Year: 1996
• Volume: 90
• Issue: 5
• Pages: 1045-1049

Dates

published

1996-11

Contributors

author

V. Gnezdilov

• Institute for Low Temperature Physics and Engineering National Academy of Sciences of Ukraine, Kharkov 310164, Ukraine

author

M. Mironov

• Institute for Low Temperature Physics and Engineering National Academy of Sciences of Ukraine, Kharkov 310164, Ukraine

author

V. Yshakov

• Institute for Low Temperature Physics and Engineering National Academy of Sciences of Ukraine, Kharkov 310164, Ukraine

author

O. Mironov

• Department of Physics, University of Warwick, Coventry, CV4 7AL, U.K.

author

P. Phillips

• Department of Physics, University of Warwick, Coventry, CV4 7AL, U.K.

author

E. Parker

• Department of Physics, University of Warwick, Coventry, CV4 7AL, U.K.

Identifiers

DOI

10.12693/APhysPolA.90.1045