Tunable metal-insulator transitions in bilayer graphene by thermal annealing
arXiv:1208.1828 · doi:10.1063/1.3598403
Abstract
Tunable and highly reproducible metal-insulator transitions have been observed in bilayer graphene upon thermal annealing at 400 K under high vacuum conditions. Before annealing, the sample is metallic in the whole temperature regime of study. Upon annealing, the conductivity changes from metallic to that of an insulator and the transition temperature is a function of annealing time. The pristine metallic state can be reinstated by exposing to air thereby inducing changes in the electronic properties by adsorbing water vapor, which makes graphene a technologically promising material for sensor applications.
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Cited by in corpus (6)
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- The role of charge traps in inducing hysteresis: capacitance - voltage measurements on top gated bilayer graphene
- Giant magnetoresistance in single layer graphene flakes with a gate voltage tunable weak antilocalization
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