Pseudomagnetic fields and ballistic transport in a suspended graphene sheet.
We study a suspended graphene sheet subject to the electric field of a gate underneath. We compute the elastic deformation of the sheet and the corresponding effective gauge field, which modifies the electronic transport. In a clean system the two-terminal conductance of the sample is reduced below the ballistic limit and is almost totally suppressed at low carrier concentrations in samples under tension. Residual disorder restores a small finite conductivity.
Fogler
M M
MM
Department of Physics, University of California San Diego, 9500 Gilman Dr., La Jolla, California 92093, USA.
Guinea
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F
Katsnelson
M I
MI