Longitudinal magnetoconductivity and magnetodielectric effect in bilayer graphene

[摘要] It was recently shown that a finite imbalance between electron densities in the K and K′ valleys of bilayer graphene induces a magnetoelectric coupling. Here we explore ramifications of this electronically tunable magnetoelectric effect for the optical conductivity and dielectric permittivity of this material. Our results augment current understanding of longitudinal magnetoresistance and magnetocapacitance in unconventional materials.

[发布机构] School of Chemical and Physical Sciences, MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, PO Box 600, Wellington; 6140, New Zealand^1;Kavli Institute for Theoretical Physics, University of California, Santa Barbara; CA; 93106, United States^2;Department of Physics, Northern Illinois University, DeKalb; IL; 60115, United States^3;Materials Science Division, Argonne National Laboratory, Argonne; IL; 60439, United States^4

[关键词] Bilayer Graphene;Dielectric permittivities;Electronically tunable;Longitudinal magnetoresistance;Magneto-conductivity;Magneto-dielectric effects;Magnetocapacitance;Magnetoelectric couplings