Abstract
The effects of isotope disorder on the energies of the transverse acoustic (TAL), longitudinal acoustic (LAL) and transverse optical (TOL) phonons at the L point have been investigated using the luminescence of excitons bound to copper acceptors. In a sample with approximately equal 70Ge and 78Ge the TOL phonon is 0.14+or-0.03 meV higher in energy than expected for a crystal of the same mean atomic mass, while the LAL phonon is 0.07+or-0.03 meV lower in energy; the TOL phonon is also broadened by 0.4 meV. In this disordered sample the Cu no-phonon line is 0.05+or-0.02 meV higher than expected.
| Original language | English |
|---|---|
| Article number | 021 |
| Pages (from-to) | 127-130 |
| Number of pages | 4 |
| Journal | Semiconductor Science and Technology |
| Volume | 8 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1993 Dec 1 |
| Externally published | Yes |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering
- Materials Chemistry
Fingerprint Dive into the research topics of 'Effects of isotope disorder on phonons in germanium determined from bound exciton luminescence'. Together they form a unique fingerprint.
Cite this
Davies, G., Hartung, J., Ozhogin, V., Itoh, K., Hansen, W. L., & Haller, E. E. (1993). Effects of isotope disorder on phonons in germanium determined from bound exciton luminescence. Semiconductor Science and Technology, 8(1), 127-130. [021]. https://doi.org/10.1088/0268-1242/8/1/021