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Proceedings Paper

Effect of tunneling modulation on the quantized conductance in a coupled double-electron waveguide
Author(s): Ben-Yuan Gu; Chong-ru Huo
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Paper Abstract

The effect of different tunneling modulations on the quantized conductance in a coupled double electron waveguide is theoretically investigated with the use of a model of two coupled chains. The calculated results show that both the accuracy of the quantization in the conductance and the resonance pattern strongly depend on the tunneling modulation between two channels. The resonance structures in the conductance plateaus are smeared when the corresponding tunneling modulation alters smoothly over the obstacle region. We also study the variation of the quantized conductance with the Fermi energy for various doubly-connected structures. A series of new novel features in the conductance curve emerge. We find that this two coupled chain model is shown to describe the essence of quantum ballistic transport of electrons in the two coupled electron waveguide in a simple and transparent way.

Paper Details

Date Published: 3 September 1992
PDF: 11 pages
Proc. SPIE 1675, Quantum Well and Superlattice Physics IV, (3 September 1992); doi: 10.1117/12.137593
Show Author Affiliations
Ben-Yuan Gu, China Ctr. of Advanced Science and Technology (China)
Institute of Physics (China)
Chong-ru Huo, China Ctr. of Advanced Science and Technology (China)
Institute of Physics (China)


Published in SPIE Proceedings Vol. 1675:
Quantum Well and Superlattice Physics IV

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