PHONON REFLECTIVITY BEHAVIOR IN CSH AND CSD AT MEGABAR PRESSURES - PHONONS IN THE NEAR IR (LAMBDA=1-2-MU-M)

Citation
Al. Ruoff et al., PHONON REFLECTIVITY BEHAVIOR IN CSH AND CSD AT MEGABAR PRESSURES - PHONONS IN THE NEAR IR (LAMBDA=1-2-MU-M), Solid state communications, 100(11), 1996, pp. 777-780
Citations number
19
Categorie Soggetti
Physics, Condensed Matter
Journal title
ISSN journal
00381098
Volume
100
Issue
11
Year of publication
1996
Pages
777 - 780
Database
ISI
SICI code
0038-1098(1996)100:11<777:PRBICA>2.0.ZU;2-L
Abstract
Reflectivity at the diamond-sample interface was measured for CsH at P = 0, 102, 177 and 251 GPa and for CsD at 137 GPa in the energy range 0.5-2.5 eV. The expected isotope effect for phonons was found, confirm ing that the rise in reflectivity observed at high pressure and the ne ar infrared as energy decrease is due to phonons and is not a plasma e dge, which might also be expected in this pressure range for CsH. Thes e are the first studies of phonon reflectivity in the diamond anvil ce ll to 2.5 Mbar and are the first high pressure phonon studies in any o f the alkali hydrides. Copyright (C) 1996 Published by Elsevier Scienc e Ltd.