59 citations · 145 across the 4 of their papers we have counts for
4 papers
Structure and vibrational spectra of carbon clusters in SiC
Alexander Mattausch, Michel Bockstedte, Oleg Pankratov
The electronic, structural and vibrational properties of small carbon interstitial and antisite clusters are investigated by ab initio methods in 3C and 4H-SiC. The defects possess…
Excitonic effects in time-dependent density-functional theory: An analytically solvable model
R. Stubner, I. V. Tokatly, O. Pankratov
We investigate the description of excitonic effects within time-dependent density-functional theory (TDDFT). The exchange-correlation kernel f_xc introduced in TDDFT allows a clear…
Annealing mechanisms of intrinsic defects in 3C-SiC: a theoretical study
Michel Bockstedte, Alexander Mattausch, Oleg Pankratov
The annealing kinetics of mobile intrinsic defects is investigated by an ab initio method based on density functional theory. The interstitial-vacancy recombination, the diffusion…
Carbon antisite clusters in SiC: a possible pathway to the D_{II} center
Alexander Mattausch, Michel Bockstedte, Oleg Pankratov
The photoluminescence center D_{II} is a persistent intrinsic defect which is common in all SiC polytypes. Its fingerprints are the characteristic phonon replicas in luminescence s…