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. 
Ming-Wei Lin, Cheng Ling, Luis A. Agapito, Nicholas Kioussis, Yiyang   Zhang, Mark Ming-Cheng Cheng, Wei L. Wang, Efthimios ...
cond-mat.mes-hall cond-mat.mtrl-sci