scholarly journals Raman Spectra of Nonpolar Crystalline Nanoparticles: Elasticity Theory-like Approach for Optical Phonons

2018 ◽  
Vol 122 (39) ◽  
pp. 22738-22749 ◽  
Author(s):  
Oleg I. Utesov ◽  
Andrey G. Yashenkin ◽  
Sergei V. Koniakhin
Keyword(s):  
Elasticity Theory ◽  
Raman Spectra ◽  
Optical Phonons

scholarly journals Ионный синтез кристаллической фазы Ge в пленках SiO-=SUB=-x-=/SUB=-N-=SUB=-y-=/SUB=- при отжиге под высоким давлением

2018 ◽  
Vol 52 (2) ◽  
pp. 280
Author(s):  
И.Е. Тысченко ◽  
Г.К. Кривякин ◽  
В.А. Володин
Keyword(s):  
Raman Scattering ◽  
Raman Spectra ◽  
Quantum Confinement ◽  
Quantum Confinement Effect ◽  
Hydrostatic Compression ◽  
Confinement Effect ◽  
Optical Phonons ◽  
Photoluminescence Spectra ◽  
Ge Nanocrystals

AbstractThe nucleation of the crystalline Ge phase in SiO_ x N_ y films implanted with Ge^+ ions with the energy 55 keV to doses of 2.1 × 10^15–1.7 × 10^16 cm^–2 and then annealed at a temperature of T _a = 800–1300°C under pressures of 1 bar and 1–12 kbar is studied. From analysis of the Raman spectra, it is concluded that amorphous Ge precipitates increase in size upon hydrostatic compression at a temperature of 1000°C. Raman scattering at optical phonons localized in Ge nanocrystals is observed only after annealing of the samples with the highest content of implanted atoms at a temperature of 1300°C. In the photoluminescence spectra, a peak is observed at the wavelength ∼730 nm. The peak is considered to be the manifestation of the quantum-confinement effect in nanocrystals ∼3 nm in size.

Optical phonons in the bulk and on the surface of ZnO and ZnTe/ZnO nanowires in Raman spectra

2012 ◽  
Vol 54 (10) ◽  
pp. 2083-2090 ◽  
Author(s):  
V. S. Vinogradov ◽  
V. N. Dzhagan ◽  
T. N. Zavaritskaya ◽  
I. V. Kucherenko ◽  
N. N. Mel’nik ◽  
...  
Keyword(s):  
Raman Spectra ◽  
Zno Nanowires ◽  
Optical Phonons

Specific features of optical phonons in raman spectra of an array of vertical ZnO microrods on silicon

2014 ◽  
Vol 56 (3) ◽  
pp. 561-567
Author(s):  
N. V. Lyanguzov ◽  
A. S. Anokhin ◽  
D. I. Levshov ◽  
E. M. Kaidashev ◽  
Yu. I. Yuzyuk ◽  
...  
Keyword(s):  
Raman Spectra ◽  
Optical Phonons

Inelastic scattering at surfaces and interfaces

1986 ◽  
Vol 44 ◽  
pp. 392-393
Author(s):  
R. H. Ritchie ◽  
A. Howie
Keyword(s):  
Inelastic Scattering ◽  
Surface Properties ◽  
Correlation Energy ◽  
Condensed Matter ◽  
Charged Particles ◽  
Condensed Matter Physics ◽  
Optical Phonons ◽  
Exchange Correlation ◽  
Surfaces And Interfaces ◽  
Inelastic Interactions

An important part of condensed matter physics in recent years has involved detailed study of inelastic interactions between swift electrons and condensed matter surfaces. Here we will review some aspects of such interactions.Surface excitations have long been recognized as dominant in determining the exchange-correlation energy of charged particles outside the surface. Properties of surface and bulk polaritons, plasmons and optical phonons in plane-bounded and spherical systems will be discussed from the viewpoint of semiclassical and quantal dielectric theory. Plasmons at interfaces between dissimilar dielectrics and in superlattice configurations will also be considered.

Single Crystal Raman Spectra of the Phase Transition in KTCNQ

1982 ◽  
Vol 85 (1) ◽  
pp. 297-303 ◽  
Author(s):  
A. D. Bandrauk ◽  
K. D. Truong ◽  
S. Jandl
Keyword(s):  
Phase Transition ◽  
Single Crystal ◽  
Raman Spectra
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