| | 1 | Author
| J. M. Keartland, I. P. Goudemond, G.C K Fölscher, M.J R Hoch | Requires cookie* | | | Title
| Nucleus-Carrier Interactions in the Group V Semimetals: Dependence on Temperature and Pressure  | | | | Abstract
| A review is given of pulsed NQR spin-lattice relaxation measurements on the rhombohedral semimetals, arsenic (As) and antimony (Sb). The nuclear spin-lattice relaxation time 7\ has been measured in the temperature range 100 mK-600 K. The data follow the Korringa relation at low temperatures, but deviations from this relation are found as the temperature is increased. The results are quantitatively explained by considering interactions of the nuclei with the carriers at the Fermi surface. Above the Debye temperature (0 D) the data may be understood by including a two phonon process in the analysis. The relaxation data for As and Sb are found to scale with d D . T x has been measured for As at 295 K in the pressure range 0-10 kbar. The results are discussed in terms of changes in the Fermi surface parameters. PACS numbers: 76.60. Es; 76.60Gv; 71.20Cf. | | | |
Reference
| Z. Naturforsch. 47a, 49—53 (1992); received August 27 1991 | | | |
Published
| 1992 | | | |
Keywords
| Semimetals, Pulsed NQR, Nucleus-carrier interactions, Nucleus-phonon inter-actions, Fermi surface parameters | | | |
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| ZNA-1992-47a-0049 | | | | Volume
| 47 | |
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