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Open AccessArticle

Guided Modes in a Double-Well Asymmetric Potential of a Graphene Waveguide

by Yi Xu and Lay Kee Ang *
Engineering Product Development, Singapore University of Technology and Design, Singapore 487372, Singapore
*
Author to whom correspondence should be addressed.
Academic Editors: Yoke Khin Yap and Zhixian Zhou
Electronics 2016, 5(4), 87; https://doi.org/10.3390/electronics5040087
Received: 27 October 2016 / Revised: 28 November 2016 / Accepted: 1 December 2016 / Published: 7 December 2016
(This article belongs to the Special Issue Two-Dimensional Electronics and Optoelectronics)
The analogy between the electron wave nature in graphene electronics and the electromagnetic waves in dielectrics has suggested a series of optical-like phenomena, which is of great importance for graphene-based electronic devices. In this paper, we propose an asymmetric double-well potential on graphene as an electronic waveguide to confine the graphene electrons. The guided modes in this graphene waveguide are investigated using a modified transfer matrix method. It is found that there are two types of guided modes. The first kind is confined in one well, which is similar to the asymmetric quantum well graphene waveguide. The second kind can appear in two potential wells with double-degeneracy. Characteristics of all the possible guide modes are presented. View Full-Text
Keywords: guided modes; graphene; electronic waveguide guided modes; graphene; electronic waveguide
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MDPI and ACS Style

Xu, Y.; Ang, L.K. Guided Modes in a Double-Well Asymmetric Potential of a Graphene Waveguide. Electronics 2016, 5, 87.

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