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Lookup NU author(s): Professor Jon Goss,
Professor Patrick Briddon
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The structure of the defect responsible for the H1a absorption feature in diamond has been much debated. In this work, the results of uniaxial stress-splitting studies are compared to piezospectroscopic stress-splitting parameters calculated for the (001) dinitrogen split interstitial (N 2I) defect. The stress-splitting data shows that the H1a absorption band arises from an A→E transition at a center with D2d symmetry. Furthermore, the experimentally and theoretically determined stress-splitting parameters are in excellent agreement, supporting the assignment of the H1a band to the N2I defect. © 2010 The American Physical Society.
Author(s): Liggins S, Newton M, Goss J, Briddon P, Fisher D
Publication type: Article
Publication status: Published
Journal: Physical Review B: Condensed Matter and Materials Physics
Print publication date: 23/02/2010
ISSN (print): 1098-0121
ISSN (electronic): 1550-235X
Publisher: American Physical Society
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