Effect of tunneling modulation on the quantized conductance in a coupled double-electron waveguide

Ben-Yuan Gu; Chong-ru Huo

doi:10.1117/12.137593

3 September 1992 Effect of tunneling modulation on the quantized conductance in a coupled double-electron waveguide

Ben-Yuan Gu, Chong-ru Huo

Proceedings Volume 1675, Quantum Well and Superlattice Physics IV; (1992) https://doi.org/10.1117/12.137593
Event: Semiconductors '92, 1992, Somerset, NJ, United States

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.

Citation Download Citation

Ben-Yuan Gu and Chong-ru Huo "Effect of tunneling modulation on the quantized conductance in a coupled double-electron waveguide", Proc. SPIE 1675, Quantum Well and Superlattice Physics IV, (3 September 1992); https://doi.org/10.1117/12.137593

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available