Giant magneto-drag in graphene at charge neutrality
Mesoscale and Nanoscale Physics
2013-12-10 v3
Abstract
We report experimental data and theoretical analysis of Coulomb drag between two closely positioned graphene monolayers in weak magnetic field. Close enough to the neutrality point, coexistence of electrons and holes in each layer leads to a dramatic increase of the drag resistivity. Away from charge neutrality, we observe non-zero Hall drag. The observed phenomena are explained by decoupling of electric and quasiparticle currents which are orthogonal at charge neutrality. The sign of magneto-drag depends on the energy relaxation rate and geometry of the sample.
Keywords
Cite
@article{arxiv.1303.6264,
title = {Giant magneto-drag in graphene at charge neutrality},
author = {M. Titov and R. V. Gorbachev and B. N. Narozhny and T. Tudorovskiy and M. Schuett and P. M. Ostrovsky and I. V. Gornyi and A. D. Mirlin and M. I. Katsnelson and K. S. Novoselov and A. K. Geim and L. A. Ponomarenko},
journal= {arXiv preprint arXiv:1303.6264},
year = {2013}
}
Comments
12 pages, 7 figures including supplemental information