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Deutsche Physikalische Gessellschaft IOP Institute of Physics

Magnetoconductivity of Dirac fermions in graphene under charged impurity scatterings

Xin-Zhong Yan1,2 and C S Ting2

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On the basis of the self-consistent Born approximation, we solve the Bethe–Salpeter matrix equations for a Cooperon propagator of Dirac fermions in graphene under charged impurity scatterings and a weak external magnetic field. In the absence of the magnetic field, the quantum interference effect in the electric conductivity from the contribution of the Cooperon propagator is studied and a possible weak localization in the system is discussed in terms of the sample length and temperature. The magnetoconductivity stemming from the quantum interference effect is calculated and the obtained results are in good agreement with experimental measurements.


PACS

73.63.-b Electronic transport in nanoscale materials and structures

72.20.My Galvanomagnetic and other magnetotransport effects

72.80.Rj Fullerenes and related materials

73.20.Fz Weak or Anderson localization

73.23.-b Electronic transport in mesoscopic systems

72.20.Dp General theory, scattering mechanisms

Subjects

Condensed matter: electrical, magnetic and optical

Semiconductors

Surfaces, interfaces and thin films

Nanoscale science and low-D systems

Dates

Issue 9 (September 2009)

Received 11 June 2009

Published 16 September 2009



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