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Mechanical cleaning of graphene
A. M. Goossens, V. E. Calado, A. Barreiro +3
Contamination of graphene due to residues from nanofabrication often introduces background doping and reduces charge carrier mobility. For samples of high electronic quality, post-…
Quantum Hall Effect, Screening and Layer-Polarized Insulating States in Twisted Bilayer Graphene
Javier D. Sanchez-Yamagishi, Thiti Taychatanapat, Kenji Watanabe +3
We investigate electronic transport in dual-gated twisted bilayer graphene. Despite the sub-nanometer proximity between the layers, we identify independent contributions to the mag…
Hot Carrier-Assisted Intrinsic Photoresponse in Graphene
Nathaniel M. Gabor, Justin C. W. Song, Qiong Ma +6
Graphene is a new material showing high promise in optoelectronics, photonics, and energy-harvesting applications. However, the underlying physical mechanism of optoelectronic resp…
Tunable metal-insulator transition in double-layer graphene heterostructures
L. A. Ponomarenko, A. K. Geim, A. A. Zhukov +8
We report a double-layer electronic system made of two closely-spaced but electrically isolated graphene monolayers sandwiched in boron nitride. For large carrier densities in one…
Boron Nitride Substrates for High Mobility Chemical Vapor Deposited Graphene
W. Gannett, W. Regan, K. Watanabe +3
Chemical vapor deposited (CVD) graphene is often presented as a scalable solution to graphene device fabrication, but to date such graphene has exhibited lower mobility than that p…
Quantum Hall effect and Landau level crossing of Dirac fermions in trilayer graphene
Thiti Taychatanapat, Kenji Watanabe, Takashi Taniguchi +1
We investigate electronic transport in high mobility (\textgreater 100,000 cm/Vs) trilayer graphene devices on hexagonal boron nitride, which enables the observation of…