Shallow-donor impurity in vertical-stacked InGaN/GaN multiple-quantum wells: Electric field effect

2010 ◽  
Vol 43 (1) ◽  
pp. 458-461 ◽  
Author(s):  
Congxin Xia ◽  
Zaiping Zeng ◽  
Shuyi Wei ◽  
Jingbo Wei
Keyword(s):  
Electric Field ◽  
Quantum Wells ◽  
Field Effect ◽  
Shallow Donor ◽  
Multiple Quantum Wells ◽  
Multiple Quantum ◽  
Electric Field Effect ◽  
Donor Impurity

BUILT-IN ELECTRIC FIELD EFFECT ON DONOR IMPURITIES IN STRAINED WURTZITE GaN/AlGaN ASYMMETRIC DOUBLE QUANTUM WELLS

2012 ◽  
Vol 26 (26) ◽  
pp. 1250172 ◽  
Author(s):  
JUN ZHU ◽  
SHI LIANG BAN ◽  
SI HUA HA
Keyword(s):  
Variational Method ◽  
Electric Field ◽  
Quantum Wells ◽  
Ground State ◽  
Field Effect ◽  
Binding Energies ◽  
Double Quantum ◽  
Electric Field Effect ◽  
Material Parameters ◽  
Asymmetric Double Quantum Wells

The ground state binding energies of donor impurities in strained [0001]-oriented wurtzite GaN / Al x Ga 1-x N asymmetric double quantum wells are investigated using a variational method combined with numerical computation. The built-in electric field due to the spontaneous and strain-induced piezoelectric polarization and the strain modification on material parameters are taken into account. The variations of binding energies versus the width of central barrier, the ratio of two well widths, and the impurity position are presented, respectively. It is found that the built-in electric field causes a mutation of binding energies with increasing the width of central barrier to some value. The results for symmetrical double quantum wells and without the built-in electric field are also discussed for comparison.

Temperature and magnetic field effect on oscillations observed in GaInNAs/GaAs multiple quantum wells structures

2012 ◽  
Vol 177 (10) ◽  
pp. 729-733 ◽  
Author(s):  
H.M. Khalil ◽  
S. Mazzucato ◽  
S. Ardali ◽  
O. Celik ◽  
S. Mutlu ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Quantum Wells ◽  
Field Effect ◽  
Magnetic Field Effect ◽  
Multiple Quantum Wells ◽  
Multiple Quantum
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