Helical scattering and valleytronics in bilayer graphene

Details Helical scattering and valleytronics in bilayer graphene Helical scattering and valleytronics in bilayer graphene

2010-07-26

arxiv.org/abs/1007.4594v2

Phys. Rev. B 82, 165409 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages

Scientific paper

10.1103/PhysRevB.82.165409

We describe an angularly asymmetric interface-scattering mechanism which allows to spatially separate the electrons in the two low-energy valleys of bilayer graphene. The effect occurs at electrostatically defined interfaces separating regions of different pseudospin polarization, and is associated with the helical winding of the pseudospin vector across the interface, which breaks the reflection symmetry in each valley. Electrons are transmitted with a preferred direction of up to 60 degree over a large energetic range in one of the valleys, and down to -60 degree in the other. In a Y-junction geometry, this can be used to create and detect valley polarization.

Affiliated with

Also associated with

No associations

Rating

Helical scattering and valleytronics in bilayer 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 Helical scattering and valleytronics in bilayer graphene, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Helical scattering and valleytronics in bilayer graphene will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-320129