Strong terahertz conductance of graphene nanoribbons under a magnetic field

Authors

Junfeng Liu, Peking University
A R. Wright, University of Wollongong
Chao Zhang, University of WollongongFollow
Zhongshui Ma, Peking UniversityFollow

RIS ID

23985

Publication Details

Liu, J., Wright, A. R., Zhang, C. & Ma, Z. (2008). Strong terahertz conductance of graphene nanoribbons under a magnetic field. Applied Physics Letters, 93 (4), 041106-1-041106-3.

Abstract

We demonstrate that the optical response of graphene nanoribbons in the terahertz to far-infraredregime can be significantly enhanced and tuned by an applied magnetic field. The dependence of thethreshold frequency on the magnetic field is studied. The ribbons with the strongest terahertzconductance under a magnetic field are those with one-dimensional massless Dirac Fermion energydispersion. For a given ribbon, there exists an optimal field under which the conductance resonancecan occur at the lowest frequency.