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 76Ge the TOL phonon is 0.14 ± 0.03 meV higher in energy than expected for a crystal of the same mean atomic mass, while the LAL phonon is 0.07 ± 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 ± 0.02 meV higher than expected.
| Original language | English |
|---|---|
| Pages (from-to) | 127-130 |
| Number of pages | 4 |
| Journal | Semiconductor Science and Technology |
| Volume | 8 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1993 Jan |
| Externally published | Yes |
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ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Electronic, Optical and Magnetic Materials
- Materials Science(all)
- Condensed Matter Physics
Cite this
Effects of isotope disorder on phonons in germanium determined from bound exciton luminescence. / Davies, Gordon; Hartung, Joachim; Ozhogin, V.; Itoh, Kohei M; Hansen, W. L.; Haller, E. E.
In: Semiconductor Science and Technology, Vol. 8, No. 1, 01.1993, p. 127-130.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Effects of isotope disorder on phonons in germanium determined from bound exciton luminescence
AU - Davies, Gordon
AU - Hartung, Joachim
AU - Ozhogin, V.
AU - Itoh, Kohei M
AU - Hansen, W. L.
AU - Haller, E. E.
PY - 1993/1
Y1 - 1993/1
N2 - 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 76Ge the TOL phonon is 0.14 ± 0.03 meV higher in energy than expected for a crystal of the same mean atomic mass, while the LAL phonon is 0.07 ± 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 ± 0.02 meV higher than expected.
AB - 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 76Ge the TOL phonon is 0.14 ± 0.03 meV higher in energy than expected for a crystal of the same mean atomic mass, while the LAL phonon is 0.07 ± 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 ± 0.02 meV higher than expected.
UR - http://www.scopus.com/inward/record.url?scp=0027266461&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0027266461&partnerID=8YFLogxK
U2 - 10.1088/0268-1242/8/1/021
DO - 10.1088/0268-1242/8/1/021
M3 - Article
AN - SCOPUS:0027266461
VL - 8
SP - 127
EP - 130
JO - Semiconductor Science and Technology
JF - Semiconductor Science and Technology
SN - 0268-1242
IS - 1
ER -