Direct observation of longitudinal acoustic phonon absorption to the 1S-exciton in Cu2O

Authors
Hanke, L Frohlich, D Stolz, H
Citation
L. Hanke et al., Direct observation of longitudinal acoustic phonon absorption to the 1S-exciton in Cu2O, SOL ST COMM, 112(8), 1999, pp. 455-458
Citations number
6
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SOLID STATE COMMUNICATIONS
ISSN journal
00381098 → ACNP
Volume
112
Issue
8
Year of publication
1999
Pages
455 - 458
Database
ISI
SICI code
0038-1098(1999)112:8<455:DOOLAP>2.0.ZU;2-6
Abstract
We report excitation spectroscopy data which show direct evidence of longit udinal acoustic (LA) phonon assisted absorption to the 1S-quadrupole state in Cu2O. A special excitation geometry is used that allows the suppression of the resonant quadrupole excitation. The absorption cross-section is moni tored via the longitudinal optical (LO) phonon assisted luminescence of the 1S state. A clear anti-Stokes absorption down to 4 K is observed. (C) 1999 Elsevier Science Ltd. All rights reserved.