• 文献标题:   A New Mechanism for THz Detection Based on the Tunneling Effect in Bi-Layer Graphene Nanoribbons
  • 文献类型:   Article
  • 作  者:   MAFFUCCI A
  • 作者关键词:   graphene, graphene nanoribbon, terahertz electronic, tunneling effect
  • 出版物名称:   APPLIED SCIENCESBASEL
  • ISSN:   2076-3417
  • 通讯作者地址:   Univ Cassino Southern Lazio
  • 被引频次:   2
  • DOI:   10.3390/app5041102
  • 出版年:   2015

▎ 摘  要

A new possible mechanism of signal detection in the THz range is investigated, based on the excitation of resonances due to the tunneling effect between two graphene nanoribbons. A simple detector is proposed, where two graphene nanoribbons are used to contact two copper electrodes. The terminal voltages are shown to exhibit strong resonances when the frequency of an external impinging field is tuned to the characteristic tunneling frequency of the graphene layer pair. An electrodynamic model for the electron transport along the graphene nanoribbons is extended here to include the tunneling effect, and a coupled transmission line model is finally derived. This model is able to predict not only the tunneling resonance, but also the well-known plasmon resonances, related to the propagation of slow surface waves.