Helical scattering and valleytronics in bilayer graphene

Physics – Condensed Matter – Mesoscale and Nanoscale Physics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

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.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

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

     

Profile ID: LFWR-SCP-O-320129

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.