dmu/dn In suspended bilayer graphene: the interplay of disorder and band gap

Details dmu/dn In suspended bilayer graphene: the interplay of disorder and band gap dmu/dn In suspended bilayer graphene: the interplay of disorder and band gap

2011-07-20

arxiv.org/abs/1107.4100v2

Physical Review B 84, 195423 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 5 figures

Scientific paper

10.1103/PhysRevB.84.195423

We present an interpretation of recent experimental measurements of dmu/dn in suspended bilayer graphene samples. We demonstrate that the data may be quantitatively described by assuming a spatially varying band gap induced by local electric fields. We demonstrate that the gap fluctuations vary amongst different samples and that the gap fluctuations are correlated with the associated charge density fluctuations, indicating that the mechanism causing this effect is likely to be an extrinsic effect. We also provide predictions for the optical conductivity and mobility of suspended bilayer graphene samples with small band gaps.

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