Confined State and Electronic Transport in an Artificial Graphene-Based Tunnel Junction

• 作者: 张俊佩 张建军 成泽 曾奇军 袁建辉
• 来源期刊: 理论物理通讯：英文版
• 学科: 工学
• 关键词: 电子相互作用 人造石墨 隧道结 国家元首 密闭 基础 运输 速度调制
• 年，卷（期）: 2011,（12）
• 页码范围: 1135-1139
• 页数: 5页
• 分类号: O482.4|TQ165
• 语种: 英文

摘要

Artificial graphene structures embedded in semiconductors could open novel routes for studies of electron interactions in 1ow-dimensional systems. We propose a way to manipulate the transport properties of massless Dirac fermions in an artificial graphene-based tunnel junction. Velocity-modulation control of electron wave propagation in the different regions can be regarded as velocity barriers. Transmission probability of electron is affected profoundly by this velocity barrier. We find that there is no confinement for Dirac electron as the velocity ratio ζ is less than 1, but when the velocity ratio is larger than 1 the confined state appears in the continuum band. These localized Dirac electrons may lead to the decreasing of transmission probability.

作者信息

序号	姓名	单位	发文数	被引次数	H指数	G指数
1	成泽		8	36	1.0	6.0
2	张建军		39	174	7.0	11.0
3	袁建辉		1	0	0.0	0.0
4	曾奇军		1	0	0.0	0.0
5	张俊佩		2	0	0.0	0.0