三元周期序列石墨烯超晶格的透射禁带

J4 ›› 2016, Vol. 33 ›› Issue (2): 231-236.

三元周期序列石墨烯超晶格的透射禁带

白源¹,何英²,杨艳芳³,张惠芳⁴

上海大学理学院物理系，上海 200444

收稿日期:2015-03-24 修回日期:2015-04-14 出版日期:2016-03-28 发布日期:2016-03-28
通讯作者: 何英（1976—），女，江苏人，副教授，博士，主要研究石墨烯体系中的类光学现象 E-mail:heying@staff.shu.edu.cn
作者简介:白源（1987—）山西人，研究生，主要研究方向为石墨烯波导传输性质. E-mail: xiangcun.nanhai@163.com
基金资助:
国家自然科学基金（11204170）

Transmission gaps in graphene superlattices with triple periodic potential patterns

BAI Yuan , HE Ying , YANG Yan-fang， ZHANG Hui-fang

Department of Physics, College of Sciences, Shanghai University, Shanghai 200444, China

Received:2015-03-24 Revised:2015-04-14 Published:2016-03-28 Online:2016-03-28

摘要/Abstract

摘要： 石墨烯是一种新型的碳元素二维材料。本文利用传输矩阵方法研究了由电压调制形成的三元周期序列石墨烯超晶格的透射率禁带。作为入射电子能量函数的透射率会形成多个透射禁带。电子隧穿经过石墨烯超晶格形成的透射率禁带，可以由石墨烯超晶格的周期数、电子的入射角、势垒的高度和宽度来调节。石墨烯超晶格的这些性质在设计石墨烯多通道电子滤波器等电子器件中有潜在的应用价值。

关键词: 光电子学；透射率禁带；传输矩阵；石墨烯超晶格

Abstract: Graphene is a new kind of material made of carbon. The transmission probability in graphene superlattices with triple periodic potential patterns induced by electric field has been investigated by the transfer matrix method in this paper. It is demonstrated that the transmission probability as a function of incidence energy has more than one gap. The number, width and positions of the transmission gaps can be controlled by the period number of the superlattice, the electronic incidence angle, the height and width of the barrier. The transport properties in graphene superlattices with periodic potential patterns may lead to possible application in designing multi-channel electron wave filter.

Key words: optoelectronics; transmission gaps; transfer matrix; graphene superlattices

中图分类号:

TQ165

白源何英杨艳芳张惠芳. 三元周期序列石墨烯超晶格的透射禁带[J]. J4, 2016, 33(2): 231-236.

BAI Yuan , HE Ying , YANG Yan-fang， ZHANG Hui-fang. Transmission gaps in graphene superlattices with triple periodic potential patterns[J]. J4, 2016, 33(2): 231-236.

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