Ab initio study of dielectric response of rippled graphene
- 28 June 2011
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 134 (24), 244707
- https://doi.org/10.1063/1.3604818
Abstract
Ab initio calculations of dielectric function and electron energy loss (EEL) function of periodically rippled armchair-edged graphene were performed in the framework of the random-phase approximation. The bending of graphene was found to remove restrictions on the electron transitions being forbidden in the flat graphene for certain light polarization. As a result, new peaks appear in the optical absorption spectrum and EEL spectrum of rippled graphene. Energy position, intensity, and width of the peaks are sensitive to the height of out-of-plane graphene bending that can be used in construction of graphene-based materials with variable transparency window.Keywords
Funding Information
- Russian Foundation for Basic Research (10-02-90005)
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