Electrostatic confinement of electrons in an integrable graphene quantum dot

Details Electrostatic confinement of electrons in an integrable graphene quantum dot Electrostatic confinement of electrons in an integrable graphene quantum dot

2009-02-26

arxiv.org/abs/0902.4499v2

Phys. Rev. Lett. 102, 226803 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures; [v2] Added discussion of large aspect ratios

Scientific paper

10.1103/PhysRevLett.102.226803

We compare the conductance of an undoped graphene sheet with a small region subject to an electrostatic gate potential for the cases that the dynamics in the gated region is regular (disc-shaped region) and classically chaotic (stadium). For the disc, we find sharp resonances that narrow upon reducing the area fraction of the gated region. We relate this observation to the existence of confined electronic states. For the stadium, the conductance looses its dependence on the gate voltage upon reducing the area fraction of the gated region, which signals the lack of confinement of Dirac quasiparticles in a gated region with chaotic classical electron dynamics.

Affiliated with

Also associated with

No associations

Rating

Electrostatic confinement of electrons in an integrable graphene quantum dot 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 Electrostatic confinement of electrons in an integrable graphene quantum dot, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrostatic confinement of electrons in an integrable graphene quantum dot will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-254005