Grant, A. R. and Sievers, A. J. and Sangster, M. J. L. and Strauch, Dieter (1996) Observation of high-frequency vibrational gap modes for KI:Cl- and KI:Br-. EUROPHYSICS LETTERS, 34 (1). pp. 63-68. ISSN 0295-5075
Full text not available from this repository.Abstract
Strong far-IR impurity-induced gap modes are observed just below the bottom of the optic phonon band in KI: one for Cl- and the other for Br-. Both of these modes have been predicted using empirical potentials. The agreement between theory and experiment for the two Cl- modes indicates that the impurity displacement is dominant for the higher-frequency one but of little importance for the lower-frequency pocket-like gap mode.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | OFF-CENTER DISPLACEMENTS; ALKALI-HALIDE CRYSTALS; IMPURITY IONS |
| 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 07:09 |
| Last Modified: | 02 Nov 2023 07:09 |
| URI: | https://pred.uni-regensburg.de/id/eprint/51799 |
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