Brillouin study of acoustic phonon confinement in GeO2 nanocubes

2007 ◽  
Vol 91 (9) ◽  
pp. 093116 ◽  
Author(s):  
Y. Li ◽  
H. S. Lim ◽  
S. C. Ng ◽  
M. H. Kuok ◽  
M. Y. Ge ◽  
...  
Keyword(s):  
Acoustic Phonon ◽  
Phonon Confinement

Optical study of electron and acoustic phonon confinement in ultrathin-body germanium-on-insulator nanolayers

Nanoscale ◽  
2021 ◽  
Author(s):  
Vladimir Poborchii ◽  
Jesse Groenen ◽  
Pavel I. Geshev ◽  
Junichi Hattori ◽  
Wen Hsin Chang ◽  
...  
Keyword(s):  
Band Gap ◽  
Acoustic Phonon ◽  
Optical Study ◽  
Phonon Confinement ◽  
Electron Band ◽  
Interface Disorder

Ge-on-insulator (GeOI) acoustic phonon frequencies and E1 electron band gap vs. GeOI thickness (T) show agreement with confinement theories at T > 5 nm and disagree at T < 5 nm. Al2O3 coating improves agreement at T < 5 nm due to interface disorder reduction.

scholarly journals Probing Phonons in Nonpolar Semiconducting Nanowires with Raman Spectroscopy

2012 ◽  
Vol 2012 ◽  
pp. 1-18 ◽  
Author(s):  
Kofi W. Adu ◽  
Martin D. Williams ◽  
Molly Reber ◽  
Ruwantha Jayasingha ◽  
Humberto R. Gutierrez ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Raman Spectroscopy ◽  
Phenomenological Model ◽  
Line Shape ◽  
Laser Heating ◽  
Acoustic Phonon ◽  
Phonon Confinement ◽  
Semiconducting Nanowires ◽  
Recent Developments ◽  
Raman Probe

We present recent developments in Raman probe of confined optical and acoustic phonons in nonpolar semiconducting nanowires, with emphasis on Si and Ge. First, a review of the theoretical spatial correlation phenomenological model widely used to explain the downshift and asymmetric broadening to lower energies observed in the Raman profile is given. Second, we discuss the influence of local inhomogeneous laser heating and its interplay with phonon confinement on Si and Ge Raman line shape. Finally, acoustic phonon confinement, its effect on thermal conductivity, and factors that lead to phonon damping are discussed in light of their broad implications on nanodevice fabrication.

Acoustic phonon confinement in silicon nanolayers: Effect on electron mobility

2006 ◽  
Vol 100 (1) ◽  
pp. 013701 ◽  
Author(s):  
L. Donetti ◽  
F. Gámiz ◽  
J. B. Roldán ◽  
A. Godoy
Keyword(s):  
Electron Mobility ◽  
Acoustic Phonon ◽  
Phonon Confinement

Acoustic phonon confinement by band inversion

2019 ◽  
Vol 14 ◽  
pp. 126-129
Author(s):  
M. Esmann ◽  
F.R. Lamberti ◽  
O. Ortiz ◽  
N.D. Lanzillotti-Kimura
Keyword(s):  
Acoustic Phonon ◽  
Phonon Confinement ◽  
Band Inversion
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