TY - JOUR
T1 - Large-scale mesoscopic transport in nanostructured graphene
AU - Zhang, Haijing
AU - Lu, Jianming
AU - Shi, Wu
AU - Wang, Zhe
AU - Zhang, Ting
AU - Sun, Mingyuan
AU - Zheng, Yuan
AU - Chen, Qihong
AU - Wang, Ning
AU - Lin, Juhn-Jong
AU - Sheng, Ping
PY - 2013/2/6
Y1 - 2013/2/6
N2 - Through exponential sample-size scaling of conductance, we demonstrate strong electron localization in three sets of nanostructured antidot graphene samples with localization lengths of 1.1, 2, and 3.4 μm. The large-scale mesoscopic transport is manifest as a parallel conduction channel to 2D variable range hopping, with a Coulomb quasigap around the Fermi level. The opening of the correlation quasigap, observable below 25 K through the temperature dependence of conductance, makes possible the exponential suppression of inelastic electron-electron scatterings and thereby leads to an observed dephasing length of 10 μm.
AB - Through exponential sample-size scaling of conductance, we demonstrate strong electron localization in three sets of nanostructured antidot graphene samples with localization lengths of 1.1, 2, and 3.4 μm. The large-scale mesoscopic transport is manifest as a parallel conduction channel to 2D variable range hopping, with a Coulomb quasigap around the Fermi level. The opening of the correlation quasigap, observable below 25 K through the temperature dependence of conductance, makes possible the exponential suppression of inelastic electron-electron scatterings and thereby leads to an observed dephasing length of 10 μm.
UR - http://www.scopus.com/inward/record.url?scp=84873451301&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.110.066805
DO - 10.1103/PhysRevLett.110.066805
M3 - Article
AN - SCOPUS:84873451301
SN - 0031-9007
VL - 110
JO - Physical Review Letters
JF - Physical Review Letters
IS - 6
M1 - 066805
ER -