| Автор | M Sahraoui-Tahar |
| Автор | B Salce |
| Автор | L J Challis |
| Автор | N Butler |
| Автор | W Ulrici |
| Автор | B Cockayne |
| Дата выпуска | 1989-11-27 |
| dc.description | Thermal conductivity measurements have been made from 50 mK to 100 K of GaP and InP samples doped with Ni or V. The GaP samples both show strong resonant phonon scattering at 500 and 380 GHz respectively which is attributed to the T<sub>1</sub>-T<sub>2</sub> tunnelling splitting associated with a dynamic orthorhombic Jahn-Teller distortion of the T<sub>1</sub> orbital ground state of Ni<sup>2+</sup> and V<sup>2+</sup>. Low-frequency scattering in both systems is tentatively attributed to these same ions in complex with a defect. The assignment of the scattering to V<sup>2+</sup> is supported by studies of photo-induced changes in the V<sup>2+</sup> concentration. Uniaxial stress measurements on GaP:V suggest strong coupling to E modes but the strength of the coupling to T<sub>2</sub> modes is less clear. The absence of resonance scattering in a n-type sample of InP:Ni suggests the Ni is all in the Ni<sup>+</sup> state (<sup>2</sup>T<sub>2</sub>) as expected and the absence of scattering in n-type InP:V is consistent with the instability of V<sup>2+</sup> in that system. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Phonon scattering studies of Ni and V centres in GaP and InP |
| Тип | paper |
| DOI | 10.1088/0953-8984/1/47/004 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 1 |
| Первая страница | 9313 |
| Последняя страница | 9324 |
| Аффилиация | M Sahraoui-Tahar; Dept. of Phys., Nottingham Univ., UK |
| Аффилиация | B Salce; Dept. of Phys., Nottingham Univ., UK |
| Аффилиация | L J Challis; Dept. of Phys., Nottingham Univ., UK |
| Аффилиация | N Butler; Dept. of Phys., Nottingham Univ., UK |
| Аффилиация | W Ulrici; Dept. of Phys., Nottingham Univ., UK |
| Аффилиация | B Cockayne; Dept. of Phys., Nottingham Univ., UK |
| Выпуск | 47 |
