Strong suppression of weak localization in graphene
SourcePhysical Review Letters, 97, 1, (2006), pp. 016801-1-016801-4
Article / Letter to editor
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Theory of Condensed Matter
Physical Review Letters
SubjectCorrelated Electron Systems / High Field Magnet Laboratory (HFML); Theory of Condensed Matter
Low-field magnetoresistance is ubiquitous in low-dimensional metallic systems with high resistivity and well understood as arising due to quantum interference on self-intersecting diffusive trajectories. We have found that in graphene this weak-localization magnetoresistance is strongly suppressed and, in some cases, completely absent. The unexpected observation is attributed to mesoscopic corrugations of graphene sheets which can cause a dephasing effect similar to that of a random magnetic field.
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