• 文献标题:   Chiral tunneling through generic one-dimensional potential barriers in bilayer graphene
  • 文献类型:   Article
  • 作  者:   KLEPTSYN V, OKUNEV A, SCHUROV I, ZUBOV D, KATSNELSON MI
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW B
  • ISSN:   2469-9950 EI 2469-9969
  • 通讯作者地址:   Univ Rennes 1
  • 被引频次:   11
  • DOI:   10.1103/PhysRevB.92.165407
  • 出版年:   2015

▎ 摘  要

We study tunneling of charge carriers in single-and bilayer graphene. We propose an explanation for nonzero "magic angles" with 100% transmission for the case of symmetric potential barrier, as well as for their almost-survival for slightly asymmetric barrier in the bilayer graphene known previously from numerical simulations. Most importantly, we demonstrate that these magic angles are not protected in the case of bilayer and give an explicit example of a barrier with very small electron transmission probability for any angles. This means that one can lock charge carriers by a p-n-p (or n-p-n) junction without opening energy gap. This creates new opportunities for the construction of graphene transistors.