Measurement of energy gaps of integer and fractional quantum Hall states in suspended bilayer graphene devices
ORAL
Abstract
Single- and few-layer graphene have emerged as interesting 2D systems for the investigation of novel integer and quantum Hall states. Recently clear fractional quantum Hall states in bi-layer graphene have been observed, though studies of the magnitudes of the gaps and their dependence on electric field are very limited. Here, using dual-gated suspended bilayer graphene device, we measure the Landau level gaps for the nu$=$1 and nu$=$2/3 states, and explore their dependence on electric field.
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