publication . Preprint . Article . 2011

Tunable metal―insulator transitions in bilayer graphene by thermal annealing

Gopinadhan Kalon; Young Jun Shin; Hyunsoo Yang;
Open Access English
  • Published: 06 Jun 2011
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.
Subjects
arXiv: Condensed Matter::Strongly Correlated Electrons
free text keywords: Condensed Matter - Materials Science, Condensed Matter - Mesoscale and Nanoscale Physics, Physics and Astronomy (miscellaneous), Graphene, law.invention, law, Electrical resistivity and conductivity, Bilayer graphene, Conductivity, Ultra-high vacuum, Transition temperature, Physics, Annealing (metallurgy), Analytical chemistry, Metal–insulator transition
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publication . Preprint . Article . 2011

Tunable metal―insulator transitions in bilayer graphene by thermal annealing

Gopinadhan Kalon; Young Jun Shin; Hyunsoo Yang;