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cond-mat.mtrl-sci2004
Ab Initio calculation of band gap renormalization in highly excited GaAs
Catalin D. Spataru, Lorin X. Benedict, Steven G. Louie
We present ab initio quasiparticle self-energy calculations in crystalline GaAs for cases of intense electronic excitation (~ 10% of valence electrons excited into conduction band)…
cond-mat.mtrl-sci2003
Excitonic Effects and Optical Spectra of Single-Walled Carbon Nanotubes
Catalin D. Spataru, Sohrab Ismail-Beigi, Lorin X. Benedict +1
Many-electron effects often dramatically modify the properties of reduced dimensional systems. We report calculations, based on an many-electron Green's function approach, of elect…