Results 31 to 40 of about 3,724 (156)
Quantum tunneling and stochastic resonance [PDF]
Physical Review E, 1996 Stochastic resonance (SR) occurs in nonlinear dynamical systems when the response to a weak coherent input is enhanced by the presence of noise. While classical SR presently is an intensely studied phenomenon, the role of quantum fluctuations has only started to be explored.
Grifoni, Milena +3 more
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New Tunneling Features in Polar III-Nitride Resonant Tunneling Diodes
Physical Review X, 2017 For the past two decades, repeatable resonant tunneling transport of electrons in III-nitride double barrier heterostructures has remained elusive at room temperature.
Jimy Encomendero +8 more
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Resonant Inversion of Tunneling Magnetoresistance
Physical Review Letters, 2003 Resonant tunneling via localized states in the barrier can invert magnetoresistance in magnetic tunnel junctions. Experiments performed on electrodeposited Ni/NiO/Co nanojunctions of area smaller than 0.01 microm(2) show that both positive and negative values of magnetoresistance are possible. Calculations based on Landauer-Büttiker theory explain this
Tsymbal, Evgeny Y. +3 more
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Results in Physics, 2021 The effect of quantum barrier width and electric field on the resonant tunneling through the double barrier In0.2Ga0.8N/GaN parabolic-quantum well light-emitting diode (LED) structure and LED efficiency was investigated analytically.
Hind Althib
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High-current density terahertz resonant runneling diodes grown by MOCVD
Dianzi Jishu Yingyong, 2019 AlAs/InGaAs/AlAs resonant tunneling materials was optimized, and terahertz resonant tunneling diodes grown by MOCVD is first fabricated. The epitaxial layers of the RTD were grown on semi-insulating InP substrate.
Che Xianghui +7 more
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On dynamical tunneling and classical resonances [PDF]
The Journal of Chemical Physics, 2005 This work establishes a firm relationship between classical nonlinear resonances and the phenomenon of dynamical tunneling. It is shown that the classical phase space with its hierarchy of resonance islands completely characterizes dynamical tunneling and explicit forms of the dynamical barriers can be obtained only by identifying the key resonances ...
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Resonant Tunnelling Optoelectronic Circuits [PDF]
, 2010 Nowadays, most communication networks such as local area networks (LANs), metropolitan area networks (MANs), and wide area networks (WANs) have replaced or are about to replace coaxial cable or twisted copper wire with fiber optical cables. Light-wave communication systems comprise a transmitter based on a visible or near-infrared light source, whose ...
Figueiredo, J.M.L. +3 more
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Modulation-assisted tunneling in laser-fabricated photonic Wannier–Stark ladders
New Journal of Physics, 2015 We observe Wannier–Stark (W–S) localization in curved photonic lattices, realized using arrays of evanescently coupled optical waveguides. By correctly tuning the strength of inter-site coupling in the lattice, we observe that W–S states become ...
Sebabrata Mukherjee +6 more
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Crystals, 2022 Models describing the tunneling of electrons and holes through parabolic InxGa1−xN/GaN quantum well/LED structures with respect to strain were developed. The transmission coefficient, tunneling lifetime, and efficiency of LED structures were evaluated by
Hind Althib
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Pulse propagation in resonant tunneling [PDF]
Physical Review B, 2005 We consider the analytically solvable model of a Gaussian pulse tunneling through a transmission resonance with a Breit-Wigner characteristic. The solution allows for the identification of two opposite pulse propagation regimes: if the resonance is broad compared to the energetic width of the incident Gaussian pulse a weakly deformed and slightly ...
Wulf, Ulrich, Skalozub, V. V.
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