  Edge nanoscrolls are shown to strongly influence transport properties of
suspended graphene in the quantum Hall regime. The relatively long arc length
of the scrolls in combination with their compact transverse size results in
formation of many nonchiral transport channels in the scrolls. They
short-circuit the bulk current paths and inhibit the observation of the
quantized two-terminal resistance. Unlike competing theoretical proposals, this
mechanism of disrupting the Hall quantization in suspended graphene is not
caused by ill-chosen placement of the contacts, singular elastic strains, or a
small sample size.
