Magneto-transport of large CVD-grown graphene

Details Magneto-transport of large CVD-grown graphene Magneto-transport of large CVD-grown graphene

2010-11-26

arxiv.org/abs/1011.5712v2

Physics

Condensed Matter

Disordered Systems and Neural Networks

4 figures, 1 table

Scientific paper

We present magnetoresistance measurements on large scale monolayer graphene grown by chemical vapor deposition (CVD) on copper. The graphene layer was transferred onto SiO2/Si via PMMA and thermal release tape for transport measurements. The resulting centimeter-sized graphene samples were measured at temperatures down to 30mK in a magnetic field. We observe a very sharp peak in resistance at zero field, which is well fitted by weak localization theory. The samples exhibit conductance fluctuations symmetric in field, which are attributed to ensemble averaged conductance fluctuations due to large scale inhomogeneities consistent with the grain boundaries of copper during the CVD growth.

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