TY - JOUR
T1 - Controlling the current flux in magnetic-barrier induced graphene waveguide
AU - Villegas, Cesar E.P.
AU - Tavares, Marcos R.S.
N1 - Funding Information:
This work was supported by FAPESP, Brazil.
PY - 2012/10/15
Y1 - 2012/10/15
N2 - We theoretically propose a simple model to control the charge-density flux in graphene waveguides produced by either magnetic or electrostatic barriers. We carefully study the lowest energy guided mode and find unexpected extended states for small reflected angles contributing to flux that might be related to the superposition of surface and bound states. We also show possible manipulation of the charge carrier density, and so of the current flux, by simply changing the magnetization intensity or the waveguide width. Our results indicate how to reassess previous current flux by changing the magnetization parameter only.
AB - We theoretically propose a simple model to control the charge-density flux in graphene waveguides produced by either magnetic or electrostatic barriers. We carefully study the lowest energy guided mode and find unexpected extended states for small reflected angles contributing to flux that might be related to the superposition of surface and bound states. We also show possible manipulation of the charge carrier density, and so of the current flux, by simply changing the magnetization intensity or the waveguide width. Our results indicate how to reassess previous current flux by changing the magnetization parameter only.
UR - http://www.scopus.com/inward/record.url?scp=84867768945&partnerID=8YFLogxK
U2 - 10.1063/1.4759267
DO - 10.1063/1.4759267
M3 - Article
AN - SCOPUS:84867768945
SN - 0003-6951
VL - 101
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 16
M1 - 163104
ER -