| Автор | C L Littler |
| Автор | X N Song |
| Автор | Z Yu |
| Автор | J L Elkind |
| Автор | J R Lowney |
| Дата выпуска | 1993-01-01 |
| dc.description | Resonant impact ionization (RII) spectroscopy, a new technique for studying low concentrations of trap levels in narrow-gap Hg<sub>1-x</sub>Cd<sub>x</sub>Te has been used to investigate impurity and defect levels in both bulk and liquid phase epitaxy (LPE) crystals of this ternary material. Mercury interstitials, deliberately introduced into bulk samples with x approximately=0.22 and x approximately=0.24, provide direct evidence for the formation of trap levels near 45 and 61 meV above the valence band edge for these x-value samples. The 61 meV level in the x approximately=0.24 (E<sub>g</sub>=121 meV at 5 K) sample is seen to enhance the transition strength of resonant two-photon magneto-absorption (TPMA) observed at high fields by acting as a near-resonant intermediate state for the two-photon process. In the LPE material, samples which have received just a post-anneal in an Hg-saturated atmosphere show strong RII structure due to defect levels at approximately=60 meV above the valence band, whereas samples which are both doped with indium and post-annealed show only intrinsic one-photon magneto-absorption structure. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | RII spectroscopy of trap levels in bulk and LPE Hg<sub>1-x</sub>Cd<sub>x</sub>Te |
| Тип | paper |
| DOI | 10.1088/0268-1242/8/1S/070 |
| Electronic ISSN | 1361-6641 |
| Print ISSN | 0268-1242 |
| Журнал | Semiconductor Science and Technology |
| Том | 8 |
| Первая страница | S317 |
| Последняя страница | S321 |
| Аффилиация | C L Littler; Dept. of Phys., North Texas Univ., Denton, TX, USA |
| Аффилиация | X N Song; Dept. of Phys., North Texas Univ., Denton, TX, USA |
| Аффилиация | Z Yu; Dept. of Phys., North Texas Univ., Denton, TX, USA |
| Аффилиация | J L Elkind; Dept. of Phys., North Texas Univ., Denton, TX, USA |
| Аффилиация | J R Lowney; Dept. of Phys., North Texas Univ., Denton, TX, USA |
| Выпуск | 1S |
