Strong suppression of weak (anti)localization in graphene

Details Strong suppression of weak (anti)localization in graphene Strong suppression of weak (anti)localization in graphene

2006-03-30

arxiv.org/abs/cond-mat/0603826v2

Phys. Rev. Lett. 97, 016801 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

improved presentation of the theory part after referees comments; important experimental info added (see "note added in proof"

Scientific paper

10.1103/PhysRevLett.97.016801

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. This unexpected observation is attributed to mesoscopic corrugations of graphene sheets which cause a dephasing effect similar to that of a random magnetic field.

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