Resonant tunneling condition and transmission coefficient in a symmetrical one-dimensional rectangular double-barrier system

1987 ◽  
Vol 42 (3) ◽  
pp. 245-248 ◽  
Author(s):  
H. Yamamoto
Keyword(s):  
Transmission Coefficient ◽  
Resonant Tunneling ◽  
Double Barrier ◽  
One Dimensional

Simulation of GaAs/AlxGa1-xAs/InyGa1-y As Double-Barrier Resonant Tunneling Structures

2011 ◽  
Vol 399-401 ◽  
pp. 1093-1096
Author(s):  
Yuan Ming Zhou
Keyword(s):  
Transmission Coefficient ◽  
Current Density ◽  
Resonant Tunneling ◽  
Indium Content ◽  
Rapid Decrease ◽  
Supply Function ◽  
Double Barrier ◽  
Resonant Condition ◽  
Zero Bias ◽  
Double Barrier Resonant Tunneling

We study the resonant tunneling in symmetric GaAs/AlxGa1-xAs/InyGa1-yAs double-barrier resonant-tunneling structures. Effects of three factors on the resonant tunneling are simulated and discussed. On increasing the barrier height, the decrease of current density is attributed to the interplay between the increase of the supply function of available electrons and the rapid decrease of the transmission coefficient through the device area, and the lowest Indium content for realizing the zero-bias resonant tunneling increases. With the increase of the barrier (well) width, the decrease of the current density can be explained by the fact that both the supply function and the transmission coefficient decreases, and the lowest Indium content meeting the zero-bias resonant condition decreases.

Resonant tunneling transients and decay for a one-dimensional double barrier potential

2005 ◽  
Vol 97 (1) ◽  
pp. 013705 ◽  
Author(s):  
F. Delgado ◽  
J. G. Muga ◽  
D. G. Austing ◽  
G. García-Calderón
Keyword(s):  
Resonant Tunneling ◽  
Double Barrier ◽  
One Dimensional ◽  
Barrier Potential

THE WIDTH RATIO OF TWO BARRIERS IN RESONANT TUNNELING

2003 ◽  
Vol 17 (03) ◽  
pp. 105-109 ◽  
Author(s):  
MASATO OHMUKAI
Keyword(s):  
Transmission Coefficient ◽  
Resonant Tunneling ◽  
Width Ratio ◽  
Total Width ◽  
Barrier Width ◽  
Barrier Structure ◽  
Double Barrier ◽  
Two Parameters ◽  
Double Barrier Structure ◽  
Two Barriers

Numerical calculations by a transfer matrix method have been performed to obtain the transmission coefficient of rectangular double barrier structures. The dependence of the well width, barrier width and the barrier height was systematically investigated. When the width ratio of the two barriers was varied on condition that a total width was fixed, the transmission coefficient at a resonance is varied while that at a valley region is not. It is concluded that the resonant tunneling is characterized by two parameters: total width and the width ratio. Our results clarify the transition of transmission spectrum from a single barrier to a double barrier structure.

scholarly journals Admittance of a one-dimensional double-barrier resonant tunneling nanostructure

2002 ◽  
Vol 65 (23) ◽  
Author(s):  
W. Z. Shangguan ◽  
T. C. Au Yeung ◽  
Y. B. Yu ◽  
C. H. Kam ◽  
Xuean Zhao
Keyword(s):  
Resonant Tunneling ◽  
Double Barrier ◽  
One Dimensional ◽  
Double Barrier Resonant Tunneling

SCATTERING AND TUNNELING IN ACTIVE SYSTEMS

2011 ◽  
Vol 25 (20) ◽  
pp. 1691-1700 ◽  
Author(s):  
Y. BENNABI ◽  
A. B. HAMMOU ◽  
N. ZEKRI
Keyword(s):  
Resonant Tunneling ◽  
Double Barrier ◽  
Absorption Region ◽  
Active Systems ◽  
One Dimensional ◽  
Resonant Transmission ◽  
Tunneling Energy ◽  
Rectangular Barrier ◽  
Transmission Phase ◽  
Transmission And Reflection

The scattering properties of one-dimensional potential with gain are studied by using a Schrödinger-like equation. The corresponding Hamiltonian is non-Hermitian with a real energy spectrum. The amplification-absorption duality previously observed is interpreted in terms of the transmission and reflection phases. For a rectangular barrier, the transmission phase oscillates with the barrier width as for passive systems, but the oscillations period is significantly reduced in the absorption region. In this region the reflection phase vanishes and the multiple scattering and interferences dominate. The gain effect is also investigated for double barrier structures as well as superlattices with active potentials. It is found that resonant tunneling energy and the mini-band width are not influenced by the gain, but the transmission is enhanced for small values of the potential imaginary part. For large values, the resonant transmission significantly decreases and the mini-bands disappear.

THE PROCESS OF PHASE CHANGE OF TRANSMISSION THROUGH A MESOSCOPIC RING WITH A QUANTUM DOT

2000 ◽  
Vol 14 (14) ◽  
pp. 515-521
Author(s):  
GANG ZHANG ◽  
ZHILIANG CAO ◽  
BING-LIN GU
Keyword(s):  
Quantum Dot ◽  
Periodic Function ◽  
Phase Change ◽  
Transmission Coefficient ◽  
Resonant Tunneling ◽  
Flux Quantum ◽  
One Dimensional ◽  
Mesoscopic Ring ◽  
The One ◽  
Dimensional Wave

In this paper, we study the transmission through a mesoscopic ring with a quantum dot embedded in one of its arms with the one-dimensional wave guide theory. We discuss the detailed process of the phase change when a resonant tunneling through the dot occurs. We find that when the state of the dot is far from a resonance, the transmission coefficient is periodic with a period equal to the flux quantum Φ0. However, when a resonant tunneling through the dot occurs, the transmission coefficient is a periodic function of Φ with a period [Formula: see text]. This phenomenon is consistent with the experimental results.

NOVEL FLUX INDUCED RESONANT TUNNELING IN THE MESOSCOPIC RING CONFINED BETWEEN POTENTIAL BARRIERS

1995 ◽  
Vol 09 (20) ◽  
pp. 2719-2734 ◽  
Author(s):  
ALMAS F. SADREEV ◽  
VALERY A. VID’MANOV
Keyword(s):  
Magnetic Flux ◽  
Transport Properties ◽  
Resonant Tunneling ◽  
Quantization Condition ◽  
Double Barrier ◽  
One Dimensional ◽  
Potential Barriers ◽  
Mesoscopic Ring ◽  
Aharonov Bohm ◽  
Double Barrier Structure

Transport properties of mesoscopic rings confined between potential barriers are considered. Also considered is the double barrier structure with barriers fabricated of rings connected by a one-dimensional wire. Such structures we define as Aharonov-Bohm diodes with resonant tunneling (ABDRT) because for zero external magnetic flux their transport properties are quite similar to diodes with resonant tunneling (DRT). However, application of external magnetic flux gives rise to new resonant peaks of transmission determined by the quantization condition of the rings. Positions and widths of these novel flux induced resonant peaks extremely depend on the flux.

THEORETICAL STUDY OF RESONANT TUNNELING THROUGH RECTANGULAR N-FOLD BARRIER STRUCTURES

1989 ◽  
Vol 03 (18) ◽  
pp. 1427-1432
Author(s):  
HIROAKI YAMAMOTO ◽  
YOUJI KANIE
Keyword(s):  
Energy Range ◽  
Transmission Coefficient ◽  
Resonant Tunneling ◽  
Theoretical Study ◽  
Resonance Condition ◽  
Wave Functions ◽  
One Dimensional ◽  
Analytical Expressions

Analytical expressions for the transmission coefficient and the resonant tunneling condition in one-dimensional rectangular n-fold barrier structures have been derived. It is shown that the resonance condition corresponds to the energy range of the physically possible wave functions in the Kronig-Penney model.

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