Klein tunneling and cone transport in AA-stacked bilayer grapheneFaculty of Engineering and Information Sciences - Papers: Part A
AbstractWe investigate the quantum tunneling of electrons in an AA-stacked bilayer graphene (BLG) n-p junction and n-p-n junction. We show that Klein tunneling of an electron can occur in this system. The quasiparticles are not only chiral but are additionally described by a "cone index." Due to the orthogonality of states with different cone indexes, electron transport across a potential barrier must strictly conserve the cone index, and this leads to the protected cone transport which is unique in AA-stacked BLG. Together with the negative refraction of electrons, electrons residing in different cones can be spatially separated according to their cone index when transmitted across an n-p junction. This suggests the possibility of "cone-tronic" devices based on AA-stacked BLG. Finally, we calculate the junction conductance of the system.
Additional Grant Numberhttp://purl.org/au-research/grants/arc/DP130102956
Citation InformationMatthew Sanderson, Yee Sin Ang and C Zhang. "Klein tunneling and cone transport in AA-stacked bilayer graphene" (2013)
Available at: http://works.bepress.com/yee_sin_ang/12/