Raman studies of the decay of the longitudinal optical phonons in wurtzite GaN and AlxGa1-xN

2000 ◽  
Author(s):  
Kong-Thon F. Tsen ◽  
David K. Ferry ◽  
Stephen M. Goodnick ◽  
A. Salvador ◽  
Hadis Morkoc
Keyword(s):  
Longitudinal Optical ◽  
Optical Phonons

Photoconductivité dans l'alliage GaAsxSb1−x en présence d'un champ magnétique

1974 ◽  
Vol 52 (8) ◽  
pp. 743-747 ◽  
Author(s):  
A. Filion ◽  
E. Fortin
Keyword(s):  
Magnetic Fields ◽  
Band Gap ◽  
Effective Mass ◽  
Alloy Composition ◽  
Longitudinal Optical ◽  
Optical Phonons ◽  
Champ Magnétique

The intrinsic photoconductivity of several samples of the alloy GaAsxSb1−x has been studied at 4.2 K in the presence of magnetic fields of up to 65 kG. Values for the band-gap, the reduced effective mass of the carriers, the energy of the longitudinal optical phonons across the alloy composition are deduced from the measurements.

scholarly journals Anomalous dispersion of longitudinal optical phonons in oxygen-doped La2−xSrxCuO4+δ

2020 ◽  
Vol 101 (10) ◽  
Author(s):  
Tim Tejsner ◽  
Andrea Piovano ◽  
Ana Ţuţueanu ◽  
Astrid T. Rømer ◽  
Barrett O. Wells ◽  
...  
Keyword(s):  
Longitudinal Optical ◽  
Anomalous Dispersion ◽  
Optical Phonons

Étude des surstructures de la magnétorésistance de InSb

1987 ◽  
Vol 65 (5) ◽  
pp. 468-475 ◽  
Author(s):  
J. Galibert ◽  
P. Perrier ◽  
S. Askenazy ◽  
R. A. Stradling ◽  
P. R. Wallace
Keyword(s):  
Longitudinal Optical ◽  
Landau Levels ◽  
Second Derivative ◽  
Optical Phonons ◽  
Transverse Magnetoresistance ◽  
Method Of Determination ◽  
Spin Flip ◽  
Magnetophonon Resonance

We have carried out experiments of magnetophonon resonance on n-InSb doped at 4.6 × 1013 cm−3 at a temperature of 135 K. The second derivative of longitudinal and transverse magnetoresistance exhibits obviously spin-resolved peaks of magnetophonon resonances involving one or two longitudinal optical phonons. Among these "over-structures" appear spin-flip resonances, particularly the 0−0+ resonance.The structures of the magnetoresistance are explained from the calculation of resonance fields, based on our method of determination of the Landau levels.

Free-carrier screening of the interaction between excitons and longitudinal-optical phonons inInxGa1−xAs-InP quantum wells

1987 ◽  
Vol 35 (11) ◽  
pp. 5925-5928 ◽  
Author(s):  
M. S. Skolnick ◽  
K. J. Nash ◽  
P. R. Tapster ◽  
D. J. Mowbray ◽  
S. J. Bass ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Longitudinal Optical ◽  
Carrier Screening ◽  
Free Carrier ◽  
Optical Phonons

SOME ASPECTS OF THE ELECTRON-BOSON INTERACTION AND OF THE ELECTRON-ELECTRON INTERACTION VIA BOSONS

2007 ◽  
Vol 21 (01) ◽  
pp. 25-36 ◽  
Author(s):  
ANDREI DOLOCAN ◽  
VOICU OCTAVIAN DOLOCAN ◽  
VOICU DOLOCAN
Keyword(s):  
Emission Rate ◽  
Electron Gas ◽  
Longitudinal Optical ◽  
Standard Theory ◽  
Electron Interaction ◽  
Optical Phonons ◽  
Polaron Energy ◽  
Electron Photon ◽  
Good Agreement ◽  
Degenerate Electron Gas

By using a Hamiltonian of interaction between fermions via bosons1 we derive some properties of the electro-phonon and electron-photon interaction and also of the electron-electron interaction. We have obtained that in a degenerate electron gas there is an attraction between two electrons via acoustical phonons. Also, in certain conditions, there may be an attraction between two electrons via longitudinal optical phonons. Although our expressions for the polaron energy in both cases of the acoustical and longitudinal optical phonons are different from that obtained in the standard theory, their magnitudes are the same with these and they are in good agreement with experimental data. The total emission rate of an electron against a phonon system at absolute zero is directly proportional to the electron momentum. Also, an attraction between two electrons may appear via photons.

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