Robbie, D. A. and Sangster, M. J. L. and Grosche, E. G. and Newman, R. C. and Pletl, T. and Pavone, P. and Strauch, D. (1996) Measurements and analysis of the gap and local modes of B-Ga impurities in GaP. PHYSICAL REVIEW B, 53 (15). pp. 9863-9868. ISSN 1098-0121, 1550-235X
Full text not available from this repository.Abstract
High-resolution (0.02 cm(-1)) infrared-absorption measurements show resolved gap modes for B-10(Ga) and B-11(Ga) impurities in GaP at 284.50 and 283.10 cm(-1), respectively. These frequencies and those from local modes for the same impurities are analyzed by a method using perfect lattice modes calculated by ab initio density-functional methods and Green's-function techniques for treating the modifications introduced by the defects. It is demonstrated that the large linewidth of 0.9 cm(-1) for the gap modes and their unusual shapes are due to the second-neighbor interactions with mixed Ga-69 and Ga-71 isotopes. The measured widths of the B-10(Ga) and B-11(Ga) local modes in GaP (0.6 and 0.9 cm(-1)) correlate with the host-lattice two-phonon densities at the appropriate frequencies (592.75 and 570.00 cm(-1), respectively).
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ABSORPTION |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Alumni or Retired Professors > Group Dieter Strauch |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 02 Nov 2023 06:29 |
| Last Modified: | 02 Nov 2023 06:29 |
| URI: | https://pred.uni-regensburg.de/id/eprint/51780 |
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