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Approaching the Intrinsic Bandgap in Suspended High-Mobility Graphene Nanoribbons

We report electrical transport measurements on a suspended ultra-low-disorder graphene nanoribbon(GNR) with nearly atomically smooth edges that reveal a high mobility exceeding 3000 cm2 V-1 s-1 and an intrinsic band gap. The experimentally derived bandgap is in quantitative agreement with the results of our electronic-structure calculations on chiral GNRs with comparable width taking into account the electron-electron interactions, indicating that the origin of the bandgap in non-armchair GNRs is partially due to the magnetic zigzag edges.

preprint2011arXivOpen access
Ming-Wei LinCheng LingLuis A. AgapitoNicholas KioussisYiyang ZhangMark Ming-Cheng ChengWei L. WangEfthimios KaxirasZhixian Zhou
cond-mat.mes-hallcond-mat.mtrl-sci
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Open access9 authors2 topics
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Ming-Wei LinCheng LingLuis A. AgapitoNicholas KioussisYiyang ZhangMark Ming-Cheng ChengWei L. WangEfthimios KaxirasZhixian Zhou

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