Oscillator strength calculations in color centers of diamond and the role of spin

Mehdi Heidari Saani (), Mohammad Vesaghi and Keivan Esfarjani

The European Physical Journal B: Condensed Matter and Complex Systems, 2004, vol. 39, issue 4, 441-446

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. Copyright Springer-Verlag Berlin/Heidelberg 2004

Date: 2004
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DOI: 10.1140/epjb/e2004-00215-9

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