The vibrational spectrum and giant tunnelling effect of hydrogen dissolvedalpha-Mn

Authors
Kolesnikov, AI Antonov, VE Bennington, SM Dorner, B Fedotov, VK Grosse, G Li, JC Parker, SF Wagner, FE
Citation
Ai. Kolesnikov et al., The vibrational spectrum and giant tunnelling effect of hydrogen dissolvedalpha-Mn, PHYSICA B, 263, 1999, pp. 421-423
Citations number
4
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA B
ISSN journal
09214526 → ACNP
Volume
263
Year of publication
1999
Pages
421 - 423
Database
ISI
SICI code
0921-4526(199903)263:<421:TVSAGT>2.0.ZU;2-L
Abstract
Vibrational spectra of alpha-MnH0.07 and alpha-MnD0.05 were studied by inel astic neutron scattering at temperatures from 1.7 to 200 K over a wide rang e of energy and momentum transfers. Together with the high-energy bands of the optical vibrations, pronounced peaks at 6.3 and 1.6 meV were observed i n the spectra of the samples loaded with H and D, respectively. The study o f the temperature, momentum-transfer and isotope dependence of the spectra demonstrated the tunnelling origin of these peaks. (C) 1999 Elsevier Scienc e B.V. All rights reserved.