Pseudomagnetic fields and ballistic transport in a suspended graphene sheet

Details Pseudomagnetic fields and ballistic transport in a suspended graphene sheet Pseudomagnetic fields and ballistic transport in a suspended graphene sheet

2008-07-20

arxiv.org/abs/0807.3165v1

Phys. Rev. Lett. vol. 101, 226804 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages

Scientific paper

10.1103/PhysRevLett.101.226804

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.

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