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Single-parameter nonadiabatic quantized charge pumping

delete2008-04-14
delete177
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OA
AI
B
B. Kaestner *
K
Kashcheyevs, V.
S
Shuhei Amakawa
M
M. D. Blumenthal
L
L. Li
T
T. J. B. M. Janssen
G
G. Hein
K
K. Pierz
T
Thomas Weimann
U
U. Siegner
H
H. W. Schumacher
DOI:10.1103/PhysRevB.77.153301delete
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Abstract

Abstract

En 中文
Controlled charge pumping in an AlGaAs/GaAs gated nanowire by single-parameter modulation is experimentally and theoretically studied. Transfer of integral multiples of the elementary charge per modulation cycle is clearly demonstrated. A simple theoretical model shows that such a quantized current can be generated via loading and unloading of a dynamic quasibound state. It demonstrates that nonadiabatic blockade of unwanted tunnel events can obliterate the requirement of having at least two phase-shifted periodic signals to realize quantized pumping.
Keywords:
SURFACE ACOUSTIC-WAVES
QUANTUM-DOT TURNSTILE
ELECTRON PUMP
TRANSPORT
DRIVEN
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Journal

Physical Review B cover
Physical Review B
IF:
3.7
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15.4W
Citations:
41.0W

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I
Institute of Science Tokyo
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N
national physical laboratory - uk
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ben gurion university
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Tokyo Institute of Technology
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University of Cambridge
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physikalisch-technische bundesanstalt (ptb)
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