| Jahr | 1999 |
| Autor(en) | G. Weiss, M. Hübner, C. Enss |
| Titel | Sound velocity and internal friction of Li-doped KCl |
| KIP-Nummer | HD-KIP 99-31 |
| KIP-Gruppe(n) | F3 |
| Dokumentart | Paper |
| Quelle | Physica B 263-264, 388-391 (1999) |
| Abstract (de) | Low-frequency acoustic experiments are reported on Li-doped KCl crystals and pure KCl at temperatures between 70mK and 30 K. The temperature dependence of the transverse sound velocity is caused by the eight-level Li-tunneling systems and their particular symmetry. Both resonant and relaxational contributions to the acoustic susceptibility can be identiÞed. A consistent interpretation is possible for the two isotopes 6Li and 7Li. |
| Abstract (en) | Low-frequency acoustic experiments are reported on Li-doped KCl crystals and pure KCl at temperatures between 70mK and 30 K. The temperature dependence of the transverse sound velocity is caused by the eight-level Li-tunneling systems and their particular symmetry. Both resonant and relaxational contributions to the acoustic susceptibility can be identiÞed. A consistent interpretation is possible for the two isotopes 6Li and 7Li. |
