Rights statement: © 2013 American Physical Society
Final published version, 656 KB, PDF document
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Article number | 166601 |
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<mark>Journal publication date</mark> | 14/10/2013 |
<mark>Journal</mark> | Physical review letters |
Issue number | 16 |
Volume | 111 |
Number of pages | 5 |
Publication Status | Published |
<mark>Original language</mark> | English |
We report experimental data and theoretical analysis of Coulomb drag between two closely positioned graphene monolayers in a weak magnetic field. Close enough to the neutrality point, the coexistence of electrons and holes in each layer leads to a dramatic increase of the drag resistivity. Away from charge neutrality, we observe nonzero Hall drag. The observed phenomena are explained by decoupling of electric and quasiparticle currents which are orthogonal at charge neutrality. The sign of magnetodrag depends on the energy relaxation rate and geometry of the sample.