Electronic transport and scattering times in tungsten-decorated graphene
arXiv:1610.09342 · doi:10.1103/PhysRevB.95.075405
Abstract
The electronic transport properties of monolayer graphene have been studied before and after the deposition of a dilute coating of tungsten adatoms on the surface. For coverages up to 2.5\% of a monolayer, we find tungsten adatoms simultaneously donate electrons to graphene and reduce the carrier mobility, impacting the zero- and finite-field transport properties. Two independent transport analyses suggest the adatoms lie nearly 1 nm above the surface. The presence of adatoms is also seen to impact the low field magnetoresistance, altering the signatures of weak localization.
19 pages, 4 figures; fixed figure sizes and captions
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