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Universal optical response of Si-Si bonds and its evolution from nanoparticles to bulk crystals
Physical Review B
We use quantum-mechanical calculations and classical theories of the optical absorption of free and embedded nanoparticles to demonstrate a universality of the optical response of Si-Si bonds, independent of bonding configurations. We also demonstrate that the classical theory remains valid down to atomic-scale nanoparticles and that the evolution of the optical spectrum of a free nanoparticle would evolve to the bulk spectrum when the particle contains hundreds of thousands of Si atoms.doi:10.1103/physrevb.79.125322 fatcat:pmuyekrp2ffxpa2akkcu67765i