• 文献标题:   Photon-assisted tunneling through molecular conduction junctions with graphene electrodes
  • 文献类型:   Article
  • 作  者:   FAINBERG BD
  • 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:   Holon Inst Technol
  • 被引频次:   5
  • DOI:   10.1103/PhysRevB.88.245435
  • 出版年:   2013

▎ 摘  要

Graphene electrodes provide a suitable alternative to metal contacts in molecular conduction nanojunctions. Here, we propose to use graphene electrodes as a platform for effective photon assisted tunneling through molecular conduction nanojunctions. We predict dramatic increasing currents evaluated at side-band energies similar to nh(omega) (n is a whole number) related to the modification of graphene gapless spectrum under the action of external electromagnetic field of frequency omega. A side benefit of using doped graphene electrodes is the polarization control of photocurrent related to the processes occurring either in the graphene electrodes or in the molecular bridge. The latter processes are accompanied by surface plasmon excitation in the graphene sheet that makes them more efficient. Our results illustrate the potential of graphene contacts in coherent control of photocurrent in molecular electronics, supporting the possibility of single-molecule devices.