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Updated: May 11, 2026

Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics
Published on: September 28, 2016
Many-body effects in silicene, silicane, germanene and germanane
Wei Wei1, Ying Dai, Baibiao Huang
1School of Physics, State Key Laboratory of Crystal Material, Shandong University, Jinan 250100, People's Republic of China.
Abstract:
Silicene, which is the silicon equivalent of carbon-based graphene and shares some of the unique properties with graphene, has been attracting more and more attention since its synthesis and represents a breakthrough in current silicon-based technology. In this work, many-body effects in silicene, silicane, germanene and germanane have been demonstrated based on the Green's function perturbation theory, i.e., GW + Bethe-Salpeter equation. Due to confinement, many-body effects play a pivotal role in quasi-particle excitations and optical absorption spectra, which leads to excitonic resonance (π→π* excitation) in silicene and germanene, and strongly bound excitons in silicane and germanane with considerable binding energies.
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