Self heating and nonlinear current-voltage characteristics in bilayer graphene

Abstract

We demonstrate by experiments and numerical simulations that the low-temperature current-voltage characteristics in diffusive bilayer graphene (BLG) exhibit a strong superlinearity at finite bias voltages. The superlinearity is weakly dependent on doping and on the length of the graphene sample. This effect can be understood as a result of Joule heating. It is stronger in BLG than in monolayer graphene (MLG), since the conductivity of BLG is more sensitive to temperature due to the higher density of electronic states at the Dirac point.

9 pages, 7 figures, REVTeX 4.1

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Cited by in corpus (5)

• Electronic Thermal Conductivity Measurements in Intrinsic Graphene
• Wiedemann-Franz Relation and Thermal-transistor Effect in Suspended Graphene
• Non-linear resistivity and heat dissipation in monolayer graphene
• Energy relaxation in graphene and its measurement with supercurrent
• Electronic, thermal, and optical properties of graphene like SiC${}_x$ structures: Significant effects of Si atom configurations