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.

ELECTRIC FIELD EFFECTS ON POLARONS WITH SPATIALLY DEPENDENT MASS IN PARABOLIC QUANTUM WELLS

2004 ◽  
Vol 18 (22) ◽  
pp. 2991-2999 ◽  
Author(s):  
FENG-QI ZHAO ◽  
ZI-ZHENG GUO
Keyword(s):  
Electric Field ◽  
Quantum Wells ◽  
Effective Mass ◽  
Energy Levels ◽  
Longitudinal Optical ◽  
Optical Phonons ◽  
Phonon Interaction ◽  
Electron Phonon Interaction ◽  
Dependent Mass ◽  
Parabolic Quantum Wells

The free polaron energy levels in finite GaAs / Al x Ga 1-x As parabolic quantum wells have been investigated by a modified variational method. The effect of the electric field, the electron-phonon interaction including the longitudinal optical phonons and the four branches of interface optical phonons, and the effect of spatial dependent effective mass have been considered in the calculation. The dependence of the energies of free polarons on the alloy composition x is given. The numerical results for finite GaAs / Al x Ga 1-x As parabolic quantum wells are obtained and discussed. The results show that the effect of the electric field and the interface optical phonons as well as the longitudinal optical phonons on the energy levels is obvious. One can find that the effect of the spatially dependent effective masses on the energy levels in finite parabolic quantum wells is considerable except for large well width. Thus, the electron-phonon interaction and the effect of the spatially dependent effective mass should not be neglected for the study of the electron state problem in finite parabolic quantum wells.

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

scholarly journals Enhancement of the effective mass at high magnetic fields in CeRhIn5

2019 ◽  
Vol 99 (4) ◽  
Author(s):  
L. Jiao ◽  
M. Smidman ◽  
Y. Kohama ◽  
Z. S. Wang ◽  
D. Graf ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Effective Mass ◽  
High Magnetic Fields

Novel electronic properties of two-dimensional AsxSby alloys studied using DFT

2018 ◽  
Vol 6 (11) ◽  
pp. 2854-2861 ◽  
Author(s):  
N. Zhao ◽  
Y. F. Zhu ◽  
Q. Jiang
Keyword(s):  
Band Gap ◽  
Electronic Properties ◽  
Effective Mass ◽  
Two Dimensional ◽  
Direct Band Gap ◽  
Direct Band

Monolayered α-AsxSby alloys harbor the direct band gap and the low effective mass in the certain component.

Effective Mass Model Supported Band Gap Variation in Cobalt-Doped ZnO Nanoparticles Obtained by Co-Precipitation

2020 ◽  
Vol 54 (3) ◽  
pp. 311-316 ◽  
Author(s):  
K. P. Misra ◽  
S. Jain ◽  
A. Agarwala ◽  
N. Halder ◽  
S. Chattopadhyay
Keyword(s):  
Band Gap ◽  
Effective Mass ◽  
Zno Nanoparticles ◽  
Mass Model ◽  
Doped Zno ◽  
Co Precipitation ◽  
Effective Mass Model

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
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