A tunable electron wave filter based on graphene superlattices with periodic potential patterns

作者：Zhang Hui-yun; Gao Ying; Zhang Yu-ping^*; Xu Shi-lin; Wang Shi-fan

来源：Applied Physics Letters, 2011, 99(7): 072108.

DOI：10.1063/1.3626278

We have theoretically calculated a tunable electron wave filter based on graphene superlattices with one-dimensional periodic potentials. It is found that such structure with defect layer possess an unusual tunneling state occurring inside the forbidden gap, and the tunneling state can be modulated by changing the width of the defect layer. We have also achieved independently tunable multichannel electron wave filters by constructing fractal structures. The modulation of the transmission gap by width, period number, and incidence angle may lead to potential applications in graphene-based electronic devices.

• 出版日期2011-8-15
• 单位山东科技大学