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Ballistic transport through electric field modulated graphene periodic magnetic barriers.
- Source :
- Journal of Applied Physics; Sep2010, Vol. 108 Issue 4, p043708-37087, 7p, 1 Diagram, 6 Graphs
- Publication Year :
- 2010
-
Abstract
- The transmission coefficient and the ballistic conductance are studied theoretically for a Dirac fermion through the graphene periodic magnetic barriers modulated by a homogeneous in-plane electric field. The transmission is highly asymmetric for zero and low biased conditions of the system. In contrast, it turns out to be symmetric in case of strongly modulated (by electric field) magnetic barriers and becomes independent of the number of barriers due to the predominant Klein tunneling effect. Interesting electric field effects are noted on the angular transmission properties of the chiral carriers. The conductivity profile exhibits some negative differential conducting regions, the number and the sharpness of the regions being intimately related to the number of barriers and the Fermi energy of the system. [ABSTRACT FROM AUTHOR]
- Subjects :
- ELECTRIC fields
BALLISTICS
GRAPHENE
ELECTROMAGNETIC fields
PHYSICS research
Subjects
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 108
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 53421920
- Full Text :
- https://doi.org/10.1063/1.3467778