Screening of the surface-acoustic-wave potential by a metal gate and the quantization of the acoustoelectric current in a narrow channel

1998 ◽  
Vol 58 (16) ◽  
pp. 10589-10596 ◽  
Author(s):  
G. R. Aǐzin ◽  
Godfrey Gumbs ◽  
M. Pepper
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Narrow Channel ◽  
Metal Gate ◽  
Wave Potential ◽  
Acoustoelectric Current

scholarly journals Quantized acoustoelectric current transport through a static quantum dot using a surface acoustic wave

2003 ◽  
Vol 68 (24) ◽  
Author(s):  
N. E. Fletcher ◽  
J. Ebbecke ◽  
T. J. B. M. Janssen ◽  
F. J. Ahlers ◽  
M. Pepper ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Current Transport ◽  
Acoustoelectric Current

scholarly journals Фотоотклик в мультислойном графене при прохождении поверхностной акустической волны

2020 ◽  
Vol 46 (5) ◽  
pp. 19
Author(s):  
О.В. Кононенко ◽  
Е.В. Емелин ◽  
В.Н. Матвеев ◽  
Д.В. Рощупкин
Keyword(s):  
Lithium Niobate ◽  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Electric Potential ◽  
Lithium Niobate Crystal ◽  
Incident Light ◽  
Multilayer Graphene ◽  
Acoustoelectric Current

The photoresponse in multilayer graphene on a lithium niobate crystal (LiNbO3) was studied under the conditions of an electric potential applied to graphene and transmission of a surface acoustic wave (SAW). It is shown that the acoustoelectric current in graphene when irradiated with light either increases or decreases depending on the polarity of the potential applied to graphene. SAW causes the appearance of a periodic charge lattice in graphene, which enhances the interaction with incident light, which leads to an increase in the photoresponse.

ELECTRON–ELECTRON INTERACTIONS IN THE QUANTUM DOT INDUCED BY THE SURFACE ACOUSTIC WAVE

2004 ◽  
Vol 18 (19n20) ◽  
pp. 1029-1034
Author(s):  
ZHENG-CHUAN WANG ◽  
LING LI ◽  
JIE GAO
Keyword(s):  
Quantum Dot ◽  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Coulomb Interaction ◽  
Hartree Approximation ◽  
Tunneling Mechanism ◽  
The Poisson Equation ◽  
Self Consistent ◽  
Acoustoelectric Current ◽  
Electron Interactions

In order to study the higher order quantized plateaus in the acoustoelectric current induced by the surface acoustic wave (SAW), we consider in this paper, the Coulomb interaction of electrons trapped in the SAW-induced quantum dot at the Hartree approximation level. The Hartree self-consistent potential that originates from the electron–electron interactions in the quantum dot satisfies the Poisson equation and can be solved numerically together with the Schrödinger equation; following which, the conventional tunneling mechanism can be used to interpret the step-like acoustoelectric current, in which the escape of electrons from the quantum dot determines the deviation of the current from the quantized value. It should be noted that the quantum dot is formed by both the SAW-induced potential and the Hartree self-consistent potential in our paper, which is different from previous works. We have also calculated the first and the second quantized plateaus by use of this method.

Examination of surface acoustic wave reflections by observing acoustoelectric current generation under pulse modulation

2006 ◽  
Vol 89 (13) ◽  
pp. 132102 ◽  
Author(s):  
M. R. Astley ◽  
M. Kataoka ◽  
R. J. Schneble ◽  
C. J. B. Ford ◽  
C. H. W. Barnes ◽  
...  
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Wave Reflections ◽  
Pulse Modulation ◽  
Current Generation ◽  
Acoustoelectric Current

STUDY OF DEFECTS IN a-Ge AND a-GeHxUSING SURFACE ACOUSTIC WAVE TECHNIQUE

1981 ◽  
Vol 42 (C4) ◽  
pp. C4-365-C4-368
Author(s):  
K. L. Bhatia ◽  
M.v. Haumeder ◽  
S. Hunklinger
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Wave Technique
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