Transport in chemically doped graphene in the presence of adsorbed molecules

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dc.creatorHwang, E. H.
dc.creatorAdam, S.
dc.creatorSarma, S. Das
dc.date2006-10-30
dc.date2007-10-29
dc.date.accessioned2026-07-07T08:42:59Z
dc.date.available2026-07-07T08:42:59Z
dc.descriptionMotivated by a recent experiment reporting on the possible application of graphene as sensors, we calculate transport properties of 2D graphene monolayers in the presence of adsorbed molecules. We find that the adsorbed molecules, acting as compensators that partially neutralize the random charged impurity centers in the substrate, enhance the graphene mobility without much change in the carrier density. We predict that subsequent field-effect measurements should preserve this higher mobility for both electrons and holes, but with a voltage induced electron-hole asymmetry that depends on whether the adsorbed molecule was an electron or hole donor in the compensation process. We also calculate the low density magnetoresistance and find good quantitative agreement with experimental results.
dc.descriptionRevised version, accepted for publication in Phys. Rev. B
dc.identifierhttps://arxiv.org/abs/cond-mat/0610834
dc.identifierhttp://arxiv.org/abs/cond-mat/0610834
dc.identifierPhys. Rev. B 76, 195421 (2007)
dc.identifierdoi:10.1103/PhysRevB.76.195421
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/142160
dc.subjectMesoscale and Nanoscale Physics
dc.titleTransport in chemically doped graphene in the presence of adsorbed molecules
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