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We study the electron/hole transport in puddle-disordered and rough graphenesamples which are subject to in-plane magnetic fields. Previous treatments,mostly devoted to regimes where the electron/hole scattering wavelengths arelarger than the surface height correlation length, are based on the use oftransport equations with appropriate forms for the collision term. We point outin this work, as a counterpoint, that classical Lorentz force effects, whichare expected to hold when the Fermi level is far enough away from the chargeneutral point, can be heuristically assessed through disordered Boltzmannequations that contain magnetic-field dependent material derivatives, and keepthe zero magnetic-field structure of the collision term. It turns out that theelectric conductivity tensor gets a peculiar nondiagonal component, induced bythe in-plane magnetic field that crosses the rough topography of the graphenesheet, even if the projected random transverse magnetic field vanishes in themean. Numerical estimates of the transverse conductivities suggest that theyare suitable of observation under conditions which are within the reach ofup-to-date experimental methods.

Nondiagonal Graphene Conductivity in the Presence of In-Plane Magnetic Fields