Title: Impurity induced broadening of Drude peak in strained graphene
Author(s):

	V.O. Shubnyi (Department of Physics, Taras Shevchenko National University of Kyiv, 6 Academician Glushkov Ave., 03680 Kyiv, Ukraine) ,
	S.G. Sharapov (Bogolyubov Institute for Theoretical Physics of the National Academy of Science of Ukraine, 14-b Metrologichna St., 03680 Kyiv, Ukraine) ,
	Y.V. Skrypnyk (Bogolyubov Institute for Theoretical Physics of the National Academy of Science of Ukraine, 14-b Metrologichna St., 03680 Kyiv, Ukraine)

The recent experimental study of the far-infrared transmission spectroscopy of monolayer graphene has shown that the Drude peak width increases by more than 10% per 1% of applied mechanical strain, while the Drude weight remains unchanged. We study the influence of the strain on the resonant impurity scattering. We propose a mechanism of augmentation of the scattering rate due to the shift in the position of resonance. Using the Lifshitz model of substitutional impurities, we investigate changes in the Drude peak weight and width as functions of the Fermi energy, impurity concentration and magnitude of the impurity potential.

Key words: graphene, strain, optical conductivity, point defects, Drude weight
PACS: 72.80.Vp, 62.20.-x, 72.80.Vp, 81.05.ue, 73.22.Pr, 71.55.Ak

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