Abstract
We theoretically investigate the electron relaxation mechanism assisted by optical phonon scattering among Landau levels in graphene. The relaxation rate displays a Gaussian distribution by considering the effect of lattice relaxation that arises from the electron-deformation potential acoustic phonon coupling. We find that the present model can gives both increasing and decreasing temperature dependence of the relaxation process mediated by phonon emission. Moreover, the deformation potential constant of the acoustic phonon plays an important role in determining the temperature dependence of relaxation rate.
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