Effects of isotope disorder on phonons in germanium determined from bound exciton luminescence

G. Davies; J. Hartung; V. Ozhogin; K. Itoh; W. L. Hansen; E. E. Haller

doi:10.1088/0268-1242/8/1/021

Effects of isotope disorder on phonons in germanium determined from bound exciton luminescence

G. Davies, J. Hartung, V. Ozhogin, K. Itoh, W. L. Hansen, E. E. Haller

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

The effects of isotope disorder on the energies of the transverse acoustic (TA^L), longitudinal acoustic (LA^L) and transverse optical (TO^L) 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 TO^L phonon is 0.14+or-0.03 meV higher in energy than expected for a crystal of the same mean atomic mass, while the LA^L phonon is 0.07+or-0.03 meV lower in energy; the TO^L 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	https://doi.org/10.1088/0268-1242/8/1/021
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

Access to Document

10.1088/0268-1242/8/1/021

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

@article{5e377de345e741a693998e3bf7f69c8b,

title = "Effects of isotope disorder on phonons in germanium determined from bound exciton luminescence",

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.",

author = "G. Davies and J. Hartung and V. Ozhogin and K. Itoh and Hansen, {W. L.} and Haller, {E. E.}",

year = "1993",

month = dec,

day = "1",

doi = "10.1088/0268-1242/8/1/021",

language = "English",

volume = "8",

pages = "127--130",

journal = "Semiconductor Science and Technology",

issn = "0268-1242",

publisher = "IOP Publishing Ltd.",

number = "1",

}

TY - JOUR

T1 - Effects of isotope disorder on phonons in germanium determined from bound exciton luminescence

AU - Davies, G.

AU - Hartung, J.

AU - Ozhogin, V.

AU - Itoh, K.

AU - Hansen, W. L.

AU - Haller, E. E.

PY - 1993/12/1

Y1 - 1993/12/1

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 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.

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 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.

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

M1 - 021

ER -