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

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.

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.

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