Quasiparticle and optical properties of strained stanene and stanane
Journal article, 2017
Quasiparticle band structures and optical properties of two dimensional stanene and stanane (fully hydrogenated stanene) are studied by the GW and GW plus Bethe-Salpeter equation (GW-BSE) approaches, with inclusion of the spin-orbit coupling (SOC). The SOC effect is significant for the electronic and optical properties in both stanene and stanane, compared with their group IV-enes and IV-anes counterparts. Stanene is a semiconductor with a quasiparticle band gap of 0.10 eV. Stanane has a sizable band gap of 1.63 eV and strongly binding exciton with binding energy of 0.10 eV. Under strain, the quasiparticle band gap and optical spectrum of both stanene and stanane are tunable.
band-structure
topological insulators
external strain
electronic-properties
semiconductors
silicene
2-dimensional stanene
gas
graphene
greens-function
Author
P. F. Lu
Beijing University of Posts and Telecommunications (BUPT)
Chinese Academy of Sciences
L. Wu
Beijing University of Posts and Telecommunications (BUPT)
Chuanghua Yang
Shaanxi University of Technology
D. Liang
Beijing University of Posts and Telecommunications (BUPT)
R. G. Quhe
Beijing University of Posts and Telecommunications (BUPT)
P. F. Guan
Beijing Computational Science Research Center
Shu Min Wang
Chalmers, Microtechnology and Nanoscience (MC2), Photonics
Scientific Reports
2045-2322 (ISSN) 20452322 (eISSN)
Vol. 7 1 8- 3912Subject Categories
Atom and Molecular Physics and Optics
Nano Technology
DOI
10.1038/s41598-017-04210-w