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Diffusive Charge Transport in Graphene on SiO2
J. -H. Chen, C. Jang, M. Ishigami +3
We review our recent work on the physical mechanisms limiting the mobility of graphene on SiO2. We have used intentional addition of charged scattering impurities and systematic va…
Atomic Structure of Graphene on SiO2
Masa Ishigami, J. H. Chen, W. G. Cullen +2
We employ scanning probe microscopy to reveal atomic structures and nanoscale morphology of graphene-based electronic devices (i.e. a graphene sheet supported by an insulating sili…
Microwave Rectification by a Carbon Nanotube Schottky Diode
Enrique Cobas, Michael S. Fuhrer
Carbon nanotube Schottky diodes have been fabricated in an all-photolithographic process using dissimilar contact metals on high-frequency compatible substrates (quartz and sapphir…
Tuning the effective fine structure constant in graphene: opposing effects of dielectric screening on short- and long-range potential scattering
C. Jang, S. Adam, J. -H. Chen +3
We reduce the dimensionless interaction strength in graphene by adding a water overlayer in ultra-high vacuum, thereby increasing dielectric screening. The mobility limited by long…