Reading and writing charge on graphene devices

Details Reading and writing charge on graphene devices Reading and writing charge on graphene devices

2011-11-02

arxiv.org/abs/1111.0560v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

We use a combination of charge writing and scanning gate microscopy to map and modify the local charge neutrality point of graphene field-effect devices. We give a demonstration of the technique by writing remote charge in a thin dielectric layer over the graphene-metal interface and detecting the resulting shift in local charge neutrality point. We perform electrostatic simulations to characterize the gating effect of a realistic scanning probe tip on a graphene bilayer and find a good agreement with the experimental results.

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