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Measurement of the {\nu}= 1/3 fractional quantum Hall energy gap in suspended graphene

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arxiv 1010.1187 v2 pith:LMSSTHUY submitted 2010-10-06 cond-mat.mes-hall

Fereshte Ghahari , Yue Zhao , Paul Cadden-Zimansky , Kirill Bolotin , Philip Kim This is my paper
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keywords fractionalgraphenehallquantumresistanceenergyfieldsminima
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We report on magnetotransport measurements of multi-terminal suspended graphene devices. Fully developed integer quantum Hall states appear in magnetic fields as low as 2 T. At higher fields the formation of longitudinal resistance minima and transverse resistance plateaus are seen corresponding to fractional quantum Hall states, most strongly for {\nu}= 1/3. By measuring the temperature dependence of these resistance minima, the energy gap for the 1/3 fractional state in graphene is determined to be at ~20 K at 14 T.

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