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arXiv · 1404.2122

Theory of Graphene-Insulator-Graphene Tunnel Junctions

S. C. de la Barrera·Qin Gao·R. M. Feenstra
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Abstract

Graphene-insulator-graphene vertical tunneling structures are discussed from a theoretical perspective. Momentum conservation in such devices leads to highly nonlinear current-voltage characteristics, which with gates on the tunnel junction form potentially useful transistor structures. Two prior theoretical treatments of such devices are discussed; the treatments are shown to be formally equivalent, although some differences in their implementations are identified. The limit of zero momentum conservation in the theory is explicitly considered, with a formula involving the density-of-states of the graphene electrodes recovered in this limit. Various predictions of the theory are compared to experiment.

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S. C. de la Barrera, Qin Gao, R. M. Feenstra. 2014-04-08. Theory of Graphene-Insulator-Graphene Tunnel Junctions. https://doi.org/10.1116/1.4871760

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