Magnetic Field Effect on the Electronic Structure of Doped GaAs Quantum Well and Superlattices

2014 ◽  
Vol 3 (4) ◽  
pp. 289-292
Author(s):  
U. E. Uno ◽  
M. E. Emetere ◽  
Dada Micheal
Keyword(s):  
Magnetic Field ◽  
Electronic Structure ◽  
Quantum Well ◽  
Field Effect ◽  
Magnetic Field Effect

Tilted magnetic field effect on the subbands of a GaAlAs diode with a GaAs quantum well

2003 ◽  
Vol 33 (4) ◽  
pp. 235-245 ◽  
Author(s):  
A. Turkoglu ◽  
R. Amca ◽  
Y. Ergun ◽  
I. Sokmen ◽  
N. Balkan
Keyword(s):  
Magnetic Field ◽  
Quantum Well ◽  
Field Effect ◽  
Magnetic Field Effect ◽  
Tilted Magnetic Field

MAGNETIC FIELD EFFECT ON SOUND VELOCITY AND ATTENUATION IN AN ITINERANT ELECTRON FERROMAGNET

1993 ◽  
Vol 07 (01n03) ◽  
pp. 605-608
Author(s):  
D.J. KIM ◽  
Ikuya YOSHIDA
Keyword(s):  
Magnetic Field ◽  
Electronic Structure ◽  
Numerical Calculation ◽  
Sound Velocity ◽  
Field Effect ◽  
Magnetic Field Effect ◽  
Electron Interaction ◽  
Itinerant Electron ◽  
Magnetic Field Effects ◽  
Field Effects

In this paper we present the result of a systematic numerical calculation on the temperature dependence of magnetic field effects on the velocity and attenuation constant of longitudinal acoustic sound for both T<Tc and T>Tc of an itinerant electron ferromagnet. Attributing the origin of these magnetic field effects to the change in the screening of the ion-ion interaction which is caused by a magnetic field, first we reformulate this problem in a unified way. Then we make numerical calculation with a simple model electronic density of states and see how sensitively the sign, size, and temperature variation of these magnetic field effects depend on the details of electronic structure and electron interaction. We find that these magnetic field effects can be very strongly exchange enhanced. These findings suggest the possibility of using such magnetic field effects as a probe of the electronic structure and electron interaction in an itinerant electron ferromagnet. Finally we point out that by measuring the magnetic field effect on sound velocity we can infer the effect of the electron-phonon interaction on the magnetic properties.

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