NDLI: Locations of implanted 19F* atoms in Si, Ge and diamond studied through their nuclear quadrupole interactions

Content Provider	Springer Nature Link
Author	Swingle Nunes, S. Sulaiman, S.B. Sahoo, N. Das, T.P. Bharuth Ram, K. Frank, M. Kreische, W. Bonde Nielsen, K.
Copyright Year	1999
Abstract	The Hartree-Fock cluster procedure was used to obtain the associated electronic distributions for 19F* (I = 5/2, E x = 197 KeV excited nuclear state of the 19F atom) at possible sites in crystalline Si, Ge and diamond and to calculate nuclear quadrupole coupling constants v Q and the asymmetry parameter η of the electric field gradient at the modelled sites. Lattice relaxation effects have been incorporated by employing a geometry optimization method to obtain minimum energy configurations for the clusters modelling each site. The intrabond (IB), antibonding (AB) and substitutional (S) sites in the bulk and the atop site on the surface were studied. From a comparison with v Q and η values observed in time differential perturbed angular distribution (TDPAD) measurements we were able to identify the high frequency component in Si and Ge with 19F* at the intrabond site. In diamond two high frequency components are observed. These are identified with 19F* at intrabond and substitutional sites. For the low frequency site in Si and Ge the assignment is made to 19F* implants at dangling bonds in the bulk resulting from implantation damage. In diamond none of the sites studied could provide lower frequency nuclear quadrupole parameters close to the observed ones.
Starting Page	151
Ending Page	155
Page Count	5
File Format	PDF
ISSN	03043843
Journal	Hyperfine Interactions
Volume Number	120
Issue Number	1-8
e-ISSN	15729540
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	1999-01-01
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Surfaces and Interfaces, Thin Films Nuclear Physics, Heavy Ions, Hadrons Atoms, Molecules, Clusters and Plasmas Condensed Matter
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Atomic and Molecular Physics, and Optics Physical and Theoretical Chemistry Condensed Matter Physics

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