Title : ( Electronic and thermal properties of germanene and stanene by first-principles calculations )
Authors: samaneh Jomehpour Zaveh , Mahmood Rezaee Roknabadi , Toktam Morshedloo , Sayyed Mohsen Modarresi Saryazdi ,
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Abstract
The electronic, vibrational and thermal properties of germanene and stanene have been investigated based on density functional theory (DFT) and density functional perturbation theory (DFPT). The electronic band structure, total and partial density of states and phonon dispersion spectrum and states are analyzed. The phonon spectrum is positive for all modes in the first Brillouin zone and there is a phonon energy band gap between acoustic and optical modes which is around 50 cm-1 for both structure.The constant-volume specific heats of two structures are calculated by using phonon spectrum and density of states. The spin-orbit coupling (SOC) opens a direct energy band gap at the Dirac point, softens phonon spectrum and decreases phonon group velocity of ZA mode.
Keywords
, Germanene, Stanene, Phonon softening, Specific heat, Spin-orbit interaction
@article{paperid:1055804,
author = {Jomehpour Zaveh, Samaneh and Rezaee Roknabadi, Mahmood and Morshedloo, Toktam and Modarresi Saryazdi, Sayyed Mohsen},
title = {Electronic and thermal properties of germanene and stanene by first-principles calculations},
journal = {Superlattices and Microstructures - Micro and Nanostructures},
year = {2016},
volume = {91},
number = {2016},
month = {February},
issn = {0749-6036},
pages = {383--390},
numpages = {7},
keywords = {Germanene; Stanene; Phonon softening; Specific heat; Spin-orbit interaction},
}
%0 Journal Article
%T Electronic and thermal properties of germanene and stanene by first-principles calculations
%A Jomehpour Zaveh, Samaneh
%A Rezaee Roknabadi, Mahmood
%A Morshedloo, Toktam
%A Modarresi Saryazdi, Sayyed Mohsen
%J Superlattices and Microstructures - Micro and Nanostructures
%@ 0749-6036
%D 2016
