Fractional Quantum Point Contact Conductance Quantization Produced by an Electric Field

1995 ◽  
Vol 191 ◽  
pp. 129-134
Author(s):  
A.I. Onipko ◽  
L.I. Malysheva ◽  
Yu.A. Klimenko
Keyword(s):  
Electric Field ◽  
Point Contact ◽  
Quantum Point Contact ◽  
Fractional Quantum ◽  
Contact Conductance ◽  
Conductance Quantization ◽  
Quantum Point

scholarly journals 0.7 structure of conductance quantization in quantum point contact

2013 ◽  
Vol 62 (1) ◽  
pp. 017301
Author(s):  
Jiao Hui-Cong ◽  
An Xing-Tao ◽  
Liu Jian-Jun
Keyword(s):  
Point Contact ◽  
Quantum Point Contact ◽  
Conductance Quantization ◽  
Quantum Point ◽  
0.7 Structure

scholarly journals Conductance quantization and shot noise of a double-layer quantum point contact

2020 ◽  
Vol 101 (11) ◽  
Author(s):  
D. Terasawa ◽  
S. Norimoto ◽  
T. Arakawa ◽  
M. Ferrier ◽  
A. Fukuda ◽  
...  
Keyword(s):  
Double Layer ◽  
Shot Noise ◽  
Point Contact ◽  
Quantum Point Contact ◽  
Conductance Quantization ◽  
Quantum Point

SHOT NOISE SUPPRESSION IN QUANTUM POINT CONTACT STRUCTURES

1995 ◽  
Vol 09 (10) ◽  
pp. 573-583 ◽  
Author(s):  
L. Y. CHEN ◽  
S. C. YING
Keyword(s):  
Shot Noise ◽  
Noise Suppression ◽  
Point Contact ◽  
Channel Length ◽  
Quantum Point Contact ◽  
Recent Experimental Data ◽  
Noise Power ◽  
Conductance Quantization ◽  
Electron Wave Packet ◽  
Quantum Point

The shot noise power spectrum of a quantum point contact structure is investigated based upon a time-dependent Landauer approach. The system is modeled by an open conducting channel coupled with two infinite reservoirs. When the channel length L ≫ ξ (the coherence length of an electron wave packet), all the channel states moving from source to drain are fully occupied while all the opposite ones are empty. Consequently, shot noise is suppressed to zero along with conductance quantization. For L ~ ξ, however, while the conductance is still well quantized, the shot noise is only partially suppressed to a nonzero fraction of its full level, in agreement with recent experimental data.

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