Magnetotransport dependence on the field magnitude and direction in large area epitaxial graphene film on stretchable substrates

Peite Bao, University Of Sydney
Wenxian Li
Wai Kong Yeoh, University Of Sydney,The University Of Sydney
Xiangyuan Cui
Jung Ho Kim, University of Wollongong
Yong-Mook Kang, Kongju National University,Dongguk University-Seoul
Wenrong Yang, University Of Sydney
Shi Xue Dou, University of Wollongong
Simon P. Ringer, University Of Sydney
Rongkun Zheng, University Of Sydney

Bao, P., Li, W., Yeoh, W. Kong., Cui, X., Kim, J., Kang, Y., Yang, W., Dou, S. Xue., Ringer, S. P. & Zheng, R. (2013). Magnetotransport dependence on the field magnitude and direction in large area epitaxial graphene film on stretchable substrates. Applied Physics Letters, 102 (9), 092405-1-092405-5.

Abstract

We report the magnetotransport properties of large area graphene on stretchable polyethylene terephthalate substrates. At 2 K, weak localization of electrons introduced negative magnetoresistance at low field; a transition to positive magnetoresistance followed as the external field increases. Our results suggest that weak localization contributes to Hall effect at low temperature. At room temperature, only classical Lorentz force contribution can be observed. Angular dependence of the external magnetic field on longitudinal and transverse resistivity is measured to test the interplay between weak localization and Lorentz force contribution. Quantitative simulations based on quantum interference theory produced excellent agreement with the experiments. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4794868]