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- Title
Oscillator strength calculations in color centers of diamond and the role of spin.
- Authors
Saani, Mehdi Heidari; Ali Vesaghi, Mohammad; Esfarjani, Keivan
- Abstract
A generalized Hubbard model based on a molecular approach is used to calculate many electron wavefunctions of diamond vacancies. We have calculated the oscillator strength of the dipole transition rates from the ground states of the neutral and negatively charged vacancies. The ratio of the oscillator strengths is in very good quantitative agreement with the reported optical spectroscopic data. Electronic configurations in the ground and dipole allowed excited states are presented. With the proposed picture, the much larger oscillator strength of the negatively charged vacancy with respect to other experimentally investigated color centers N-V, H3, N3 and H4 is explained.
- Subjects
DIAMONDS; CRYSTALS; WAVE functions; HUBBARD model; ENERGY-band theory of solids; SPECTRUM analysis
- Publication
European Physical Journal B: Condensed Matter, 2004, Vol 39, Issue 4, p441
- ISSN
1434-6028
- Publication type
Article
- DOI
10.1140/epjb/e2004-00215-9