• 文献标题:   Resonance Absorption of Terahertz Radiation in Nanoperforated Graphene
  • 文献类型:   Article
  • 作  者:   ENALDIEV VV, VOLKOV VA
  • 作者关键词:  
  • 出版物名称:   JETP LETTERS
  • ISSN:   0021-3640 EI 1090-6487
  • 通讯作者地址:   Russian Acad Sci
  • 被引频次:   1
  • DOI:   10.1134/S0021364016210104
  • 出版年:   2016

▎ 摘  要

Recent measurements of the conductivity of nanoperforated graphene are interpreted in terms of edges states existing near the edge of each nanohole. The perimetric quantization of edge states should result in the formation of a quasi-equidistant ladder of quasistationary energy levels. Dirac fermions filling this ladder rotate about each nanohole in the direction determined by the valley index. It is shown that the irradiation of this system by circularly polarized terahertz radiation leads to a resonance in absorption in one of the valleys. The magnitude of absorption at the resonance frequency can be controlled by means of gate voltage.