Crossover from relaxational to resonant tunneling dynamics for random-site interacting dipoles in (K1−xNax)TaO3

1986 ◽  
Vol 33 (3) ◽  
pp. 2024-2026 ◽  
Author(s):  
A. Rigamonti ◽  
S. Torre
Keyword(s):  
Resonant Tunneling ◽  
Random Site ◽  
Tunneling Dynamics

Effects of charge accumulation and biasing on resonant tunneling energies and tunneling dynamics

1994 ◽  
Author(s):  
David A. Cardimona ◽  
Paul M. Alsing ◽  
Anjali Singh ◽  
Vassilios Kovanis
Keyword(s):  
Resonant Tunneling ◽  
Charge Accumulation ◽  
Tunneling Dynamics

scholarly journals Direct observation of resonant tunneling dynamics in high magnetic fields

1994 ◽  
Vol 72 (10) ◽  
pp. 1522-1525 ◽  
Author(s):  
A. P. Heberle ◽  
M. Oestreich ◽  
S. Haacke ◽  
W. W. Rühle ◽  
J. C. Maan ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Direct Observation ◽  
Resonant Tunneling ◽  
High Magnetic Fields ◽  
Tunneling Dynamics

Resonant tunneling dynamics of heterostructures based on semiconductors with two-valley spectra

1998 ◽  
Vol 32 (11) ◽  
pp. 1214-1221
Author(s):  
G. F. Karavaev ◽  
A. A. Voronkov
Keyword(s):  
Resonant Tunneling ◽  
Tunneling Dynamics

scholarly journals An lnterband Tunnel Oscillator: Intrinsic Bistability and Hysteresis of Trapped Hole Charge in a Double-Barrier Structure

VLSI Design ◽  
1998 ◽  
Vol 8 (1-4) ◽  
pp. 237-245 ◽  
Author(s):  
F. A. Buot
Keyword(s):  
Resonant Tunneling ◽  
Large Scale ◽  
Step Function ◽  
Rate Equations ◽  
Device Structure ◽  
Electron Hole ◽  
Hole Charge ◽  
Interband Tunneling ◽  
High Bandwidth ◽  
Tunneling Dynamics

We introduced a novel high-frequency source based on interband tunneling. A polarization-induced oscillation of trapped-hole-charge occurs in an AlGaSb/InAs/ AlGaSb resonant tunneling device. Rate equations for Zener tunneling, polarization, and electron-hole recombination is used to analyze the nonlinear dynamics of this device structure. The nonoscillatory state is unstable against the limit-cycle operation. The amplitude of trapped hole oscillation increases with bias, but the time-averaged values can be approximated by a step function. These lead to the hysteresis of the averaged trapped hole charge in AlGaSb barrier, and to the experimental intrinsic bistability in AlGaSb/InAs/AlGaSb resonant tunneling device. Large-scale time-dependent simulation of quantum transport with interband-tunneling dynamics is needed for the design optimization of this novel class of oscillator useful for high-bandwidth applications.

scholarly journals Longitudinal and transversal resonant tunneling of interacting bosons in a two-dimensional Josephson junction

2022 ◽  
Vol 12 (1) ◽  
Author(s):  
Anal Bhowmik ◽  
Ofir E. Alon
Keyword(s):  
Resonant Tunneling ◽  
Degrees Of Freedom ◽  
Mean Field ◽  
Two Dimensional ◽  
Many Body ◽  
Spatial Dimensions ◽  
The Many ◽  
Tunneling Dynamics ◽  
The Right ◽  
Physical Quantities

AbstractWe unravel the out-of-equilibrium quantum dynamics of a few interacting bosonic clouds in a two-dimensional asymmetric double-well potential at the resonant tunneling scenario. At the single-particle level of resonant tunneling, particles tunnel under the barrier from, typically, the ground-state in the left well to an excited state in the right well, i.e., states of different shapes and properties are coupled when their one-particle energies coincide. In two spatial dimensions, two types of resonant tunneling processes are possible, to which we refer to as longitudinal and transversal resonant tunneling. Longitudinal resonant tunneling implies that the state in the right well is longitudinally-excited with respect to the state in the left well, whereas transversal resonant tunneling implies that the former is transversely-excited with respect to the latter. We show that interaction between bosons makes resonant tunneling phenomena in two spatial dimensions profoundly rich, and analyze these phenomena in terms of the loss of coherence of the junction and development of fragmentation, and coupling between transverse and longitudinal degrees-of-freedom and excitations. To this end, a detailed analysis of the tunneling dynamics is performed by exploring the time evolution of a few physical quantities, namely, the survival probability, occupation numbers of the reduced one-particle density matrix, and the many-particle position, momentum, and angular-momentum variances. To accurately calculate these physical quantities from the time-dependent many-boson wavefunction, we apply a well-established many-body method, the multiconfigurational time-dependent Hartree for bosons (MCTDHB), which incorporates quantum correlations exhaustively. By comparing the survival probabilities and variances at the mean-field and many-body levels of theory and investigating the development of fragmentation, we identify the detailed mechanisms of many-body longitudinal and transversal resonant tunneling in two dimensional asymmetric double-wells. In particular, we find that the position and momentum variances along the transversal direction are almost negligible at the longitudinal resonant tunneling, whereas they are substantial at the transversal resonant tunneling which is caused by the combination of the density and breathing mode oscillations. We show that the width of the interparticle interaction potential does not affect the qualitative physics of resonant tunneling dynamics, both at the mean-field and many-body levels. In general, we characterize the impact of the transversal and longitudinal degrees-of-freedom in the many-boson tunneling dynamics at the resonant tunneling scenarios.

Resonant tunneling through traps in Schottky barriers

1977 ◽  
Vol 38 (11) ◽  
pp. 1443-1448 ◽  
Author(s):  
G. Sarrabayrouse ◽  
J. Buxo ◽  
D. Esteve
Keyword(s):  
Resonant Tunneling ◽  
Schottky Barriers

RESONANT TUNNELING DEVICES

1987 ◽  
Vol 48 (C5) ◽  
pp. C5-585-C5-588 ◽  
Author(s):  
R. E. NAHORY ◽  
N. TABATABAIE
Keyword(s):  
Resonant Tunneling ◽  
Tunneling Devices ◽  
Resonant Tunneling Devices

RESONANT TUNNELING STUDIES OF VARIABLY SPACED MULTIPLE QUANTUM WELL STRUCTURES IN THE AlGaAs SYSTEM

1987 ◽  
Vol 48 (C5) ◽  
pp. C5-457-C5-461
Author(s):  
C. J. SUMMERS ◽  
K. F. BRENNAN ◽  
A. TORABI ◽  
H. M. HARRIS ◽  
J. COMAS
Keyword(s):  
Quantum Well ◽  
Resonant Tunneling ◽  
Multiple Quantum Well ◽  
Multiple Quantum ◽  
Quantum Well Structures
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