Quasiparticle and optical properties of strained stanene and stanane
Artikel i vetenskaplig tidskrift, 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.
semiconductors
band-structure
graphene
2-dimensional stanene
external strain
topological insulators
greens-function
silicene
gas
electronic-properties
Författare
P. F. Lu
Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences
Beijing University of Posts and Telecommunications
L. Wu
Beijing University of Posts and Telecommunications
Chuanghua Yang
Shaanxi University of Technology
D. Liang
Beijing University of Posts and Telecommunications
R. G. Quhe
Beijing University of Posts and Telecommunications
P. F. Guan
Beijing Computational Science Research Center
Shu Min Wang
Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik
Scientific Reports
2045-2322 (ISSN)
Vol. 7 1 8- 3912Ämneskategorier (SSIF 2011)
Atom- och molekylfysik och optik
Nanoteknik
DOI
10.1038/s41598-017-04210-w