Electromagnetic field induced suppression of transport through $n$-$p$ junctions in graphene

Details Electromagnetic field induced suppression of transport through $n$-$p$ junctions in graphene Electromagnetic field induced suppression of transport through $n$-$p$ junctions in graphene

2007-03-16

arxiv.org/abs/cond-mat/0703432v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.98.256803

We study quasi-particle transmission through an $n $-$p$ junction in a graphene irradiated by an electromagnetic field (EF). In the absence of EF the electronic spectrum of undoped graphene is gapless, and one may expect the perfect transmission of quasi-particles flowing perpendicular to the junction. We demonstrate that the resonant interaction of propagating quasi-particles with the component of EF parallel to the junction induces a \textit{non-equilibrium dynamic gap} $(2\Delta_R)$ between electron and hole bands in the quasi-particle spectrum of graphene. In this case the strongly suppressed quasi-particle transmission is only possible due to interband tunnelling. The effect may be used for controlling transport properties of diverse structures in graphene, like, e.g., $n$-$p$-$n$ transistors, single electron transistors, quantum dots, etc., by variation of the intensity $S$ and frequency $\omega$ of the external radiation.

Affiliated with

Also associated with

No associations

Rating

Electromagnetic field induced suppression of transport through $n$-$p$ junctions in graphene does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Electromagnetic field induced suppression of transport through $n$-$p$ junctions in graphene, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electromagnetic field induced suppression of transport through $n$-$p$ junctions in graphene will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-679505