Comment on “Effects of the localized state inside the barrier on resonant tunneling in double-barrier quantum wells”

2004 ◽  
Vol 69 (23) ◽  
Author(s):  
H. Z. Xu ◽  
Z. Shi
Keyword(s):  
Quantum Wells ◽  
Resonant Tunneling ◽  
Double Barrier ◽  
Localized State

Disorder effects on resonant tunneling in double-barrier quantum wells

1988 ◽  
Vol 38 (15) ◽  
pp. 10718-10723 ◽  
Author(s):  
P. A. Schulz ◽  
C. E. T. Gonçalves da Silva
Keyword(s):  
Quantum Wells ◽  
Resonant Tunneling ◽  
Double Barrier ◽  
Disorder Effects

scholarly journals Resonant tunneling of electrons in AlSb/GaInAsSb double barrier quantum wells

AIP Advances ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 055024
Author(s):  
Edgar David Guarin Castro ◽  
Florian Rothmayr ◽  
Sebastian Krüger ◽  
Georg Knebl ◽  
Anne Schade ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Resonant Tunneling ◽  
Double Barrier

SPIN FILTERING IN MAGNETIC HETEROSTRUCTURES

2001 ◽  
Vol 15 (24n25) ◽  
pp. 3247-3252 ◽  
Author(s):  
D. O. Demchenko ◽  
A. N. Chantis ◽  
A. G. Petukhov
Keyword(s):  
Solid State ◽  
Quantum Wells ◽  
Resonant Tunneling ◽  
Magnetic Films ◽  
Resonant Tunneling Diodes ◽  
Exchange Splitting ◽  
Double Barrier ◽  
Molecular Beam Epitaxial ◽  
Tunneling Diodes ◽  
Spin Filtering

Several techniques were proposed to achieve solid state spin filtering such as magnetic tunnel junctions comprised of half-metallic compounds or solid state Stern-Gerlach apparatus. Another alternative consists in using spin-dependent resonant tunneling through magnetically active quantum wells. Recent advances in molecular beam epitaxial growth made it possible to fabricate exotic heterostructures comprised of magnetic films or buried layers (ErAs, GaxMn1-xAs) integrated with conventional semiconductors (GaAs) and to explore quantum transport in these heterostructures. It is particularly interesting to study spin-dependent resonant tunneling in double-barrier resonant tunneling diodes (RTD) with magnetic elements such as GaAs/AlAs/ErAs/AlAs/ErAs/AlAs/GaAs, GaxMn1-xAs/AlAs/GaAs/AlAs/GaAs, and GaAs/AlAs/GaxMn1-xAs/AlAs/GaAs. We present the results of our theoretical studies and computer simulations of transmission coefficients and current-voltage characteristics of resonant tunneling diodes based on these double-barrier structures. Resonant tunneling of holes (GaxMn1-xAs-based RTDs) is considered. Our approach is based on k·p perturbation theory with exchange splitting effects taken into account. We analyze exchange splitting of different resonant channels as a function of magnetization as well as spin polarization of the transmitted current as a function of bias. We found that resonant tunneling I – V characteristics of the double-barrier magnetic hererostructures strongly depend on the doping level in the emitter as well as on the orientation of the magnetization.

Resonant tunneling in double barrier structures with GaAs and (InGa)As quantum wells

1987 ◽  
Vol 3 (3) ◽  
pp. 283-285 ◽  
Author(s):  
J. Söderström ◽  
T.G. Andersson ◽  
J. Westin
Keyword(s):  
Quantum Wells ◽  
Resonant Tunneling ◽  
Double Barrier
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