Resonant Raman study of confined Se single helix and Se8 rings

2005 ◽  
Vol 87 (7) ◽  
pp. 071902 ◽  
Author(s):  
I. L. Li ◽  
S. C. Ruan ◽  
Z. M. Li ◽  
J. P. Zhai ◽  
Z. K. Tang
Keyword(s):  
Raman Study ◽  
Resonant Raman ◽  
Single Helix

High pressure photoluminescence and resonant Raman study of GaAs

1978 ◽  
Vol 25 (4) ◽  
pp. 209-211 ◽  
Author(s):  
Peter Y. Yu ◽  
Benjamin Welber
Keyword(s):  
High Pressure ◽  
Raman Study ◽  
Resonant Raman

scholarly journals Raman study of resonance effects in Ga1−xAlxN solid solutions

1998 ◽  
Vol 3 ◽  
Author(s):  
F. Demangeot ◽  
J. Frandon ◽  
M. A. Renucci ◽  
H. Sands ◽  
D. Batchelder ◽  
...  
Keyword(s):  
Band Gap ◽  
Detailed Comparison ◽  
Peak Position ◽  
Band Gap Energy ◽  
Resonance Effects ◽  
Organic Vapor ◽  
Phonon Peak ◽  
Metal Organic ◽  
Raman Study ◽  
Resonant Raman

The photoluminescence and Raman spectra of several Ga1−xAlxN layers (0 ≤ x ≤ 0.86) grown on sapphire substrates by metal-organic vapor phase epitaxy have been recorded at room temperature, under an excitation at 244 nm. Using the photoluminescence spectra, the variation of the band gap of these alloys can be followed only up to x = 0.5. From resonant Raman scattering, it can be deduced that the band gap energy of the solid solution for x very close to 0.7 corresponds to the incident photon energy (5.08 eV). This result is confirmed by a detailed comparison of the present work with previous experimental data on the A1(LO) phonon peak position, obtained under visible excitation.

EXPERIMANTAL X-RAY RESONANT RAMAN STUDY OF NICKEL

1987 ◽  
Vol 48 (C9) ◽  
pp. C9-827-C9-830
Author(s):  
S. MANNINEN ◽  
P. SUORTTI ◽  
M. J. COOPER ◽  
J. CHOMILIER ◽  
G. LOUPIAS
Keyword(s):  
X Ray ◽  
Raman Study ◽  
Resonant Raman

Breit-Wigner-Fano Lineshape Analysis of the angential G-band of Metallic Nanotubes

2000 ◽  
Vol 633 ◽  
Author(s):  
Sandra D. Brown ◽  
Ado Jorio ◽  
Paola Corio ◽  
Mildred Dresselhaus ◽  
Gene Dresselhaus ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Raman Spectra ◽  
Line Shape ◽  
Frequency Component ◽  
Lineshape Analysis ◽  
Raman Study ◽  
Resonant Raman ◽  
Band Spectra ◽  
Lorentzian Lineshape ◽  
Diameter Distributions

AbstractWe present a resonant Raman study of the tangential G-band in metallic SWNTs. By measuring the Raman spectra for isolated SWNTs, we show that the two different lineshapes observed for semiconducting and metallic SWNTs in bundles also occur for isolated SWNTs. A lineshape analysis of the tangential G-band feature for metallic SWNT bundles is presented, showing that only two components are present, the higher frequency component having a Lorentzian lineshape, and the lower one having a Breit–Wigner–Fano (BWF) line-shape. Through comparisons of the Raman tangential G-band spectra from three different diameter distributions of carbon nanotubes, we find that both the frequency and linewidth of the BWF component are diameter dependent.

Tl+Tl0(1)-like dimer centers in KCl and RbCl doped withTl+,In+, andGa+: A resonant Raman study

1990 ◽  
Vol 41 (14) ◽  
pp. 10138-10145 ◽  
Author(s):  
Hilde Fleurent ◽  
Dirk Schoemaker ◽  
Wim Joosen
Keyword(s):  
Raman Study ◽  
Resonant Raman

Resonant Raman Study on Bulk and Isolated Graphitic Nanoribbons

Small ◽  
2009 ◽  
Vol 5 (23) ◽  
pp. 2698-2702 ◽  
Author(s):  
J. Campos-Delgado ◽  
H. Farhat ◽  
Y. A. Kim ◽  
A. Reina ◽  
J. Kong ◽  
...  
Keyword(s):  
Raman Study ◽  
Resonant Raman

Resonant Raman study of low-temperature exciton localization in GaAs quantum wells

1987 ◽  
Vol 35 (6) ◽  
pp. 2892-2895 ◽  
Author(s):  
J. E. Zucker ◽  
A. Pinczuk ◽  
D. S. Chemla ◽  
A. C. Gossard
Keyword(s):  
Low Temperature ◽  
Quantum Wells ◽  
Exciton Localization ◽  
Raman Study ◽  
Resonant Raman

Resonant Raman study of polyparaphenylene-based carbons

1999 ◽  
Vol 14 (3) ◽  
pp. 1124-1131 ◽  
Author(s):  
A. Marucci ◽  
S. D. M. Brown ◽  
M. A. Pimenta ◽  
M. J. Matthews ◽  
M. S. Dresselhaus ◽  
...  
Keyword(s):  
Transition Temperature ◽  
Carbon Material ◽  
Laser Excitation ◽  
Raman Band ◽  
Excitation Energies ◽  
Resonance Behavior ◽  
Heat Treated ◽  
Disordered Carbon ◽  
Raman Study ◽  
Resonant Raman

A resonant Raman study of polyparaphenylene (PPP) prepared by the Kovacic and the Yamamoto methods and heat-treated at temperatures THT between 650 and 750°C has been performed using different laser excitation energies Elaser between 1.92 and 3.05 eV. For samples treated at low THT, the Raman spectra change with Elaser, and this behavior is ascribed to the coexistence of two forms of the PPP polymer (benzenoid and quinoid) as well as a disordered carbon material. For higher THT samples, only a dispersion of the position of the Raman band as a function of Elaser is observed, and this is explained as due to the carbonization of the original polymer. The transition temperature between these two regions of resonance behavior is lower for the Yamamoto-PPP samples than for the Kovacic-PPP samples.

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