https://doi.org/10.1140/epjb/e2016-60920-2
Regular Article
First principles study of electronic properties, interband transitions and electron energy loss of α-graphyne
Department of Nano Science, Kermanshah University of
Technology, Kermanshah, Iran
a e-mail: somayeh.behzad@gmail.com
Received:
28
November
2015
Received in final form:
7
March
2016
Published online:
2
May
2016
The electronic and optical properties of α-graphyne sheet are investigated by using density functional theory. The results confirm that α-graphyne sheet is a zero-gap semimetal. The optical properties of the α-graphyne sheet such as dielectric function, refraction index, electron energy loss function, reflectivity, absorption coefficient and extinction index are calculated for both parallel and perpendicular electric field polarizations. The optical spectra are strongly anisotropic along these two polarizations. For (E ∥ x), absorption edge is at 0 eV, while there is no absorption below 8 eV for (E ∥ z).
Key words: Computational Methods
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2016
