Paper Title:

Divacancy and Its Identification: Theory

Periodical Materials Science Forum (Volumes 527 - 529)
Main Theme Silicon Carbide and Related Materials 2005
Edited by Robert P. Devaty, David J. Larkin and Stephen E. Saddow
Pages 523-526
DOI 10.4028/www.scientific.net/MSF.527-529.523
Citation Adam Gali et al., 2006, Materials Science Forum, 527-529, 523
Online since October, 2006
Authors Adam Gali, M. Bockstedte, Nguyen Tien Son, T. Umeda, Junichi Isoya, Erik Janzén
Keywords Ab Initio Hyperfine Signature, Divacancy, Ionization Energy
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Abstract

Only recently the well-resolved hyperfine structure of the P6/P7 EPR center has been experimentally observed. Based on the calculated hyperfine tensors we assign the P6/P7 center to the high spin state neutral divacancy, which is the ground state in agreement with the experiment. We propose a mechanism to explain the loss of divacancy signal at high tem- perature annealing in semi-insulating SiC samples. We discuss the possible correlation between the divacancy and some photoluminescence centers.