Intermediate valence in the ytterbium hydride - the specific heat evidence

Authors
Drulis, M Iwasieczko, W Gaczynski, P Drulis, H
Citation
M. Drulis et al., Intermediate valence in the ytterbium hydride - the specific heat evidence, SOL ST COMM, 111(3), 1999, pp. 149-152
Citations number
12
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SOLID STATE COMMUNICATIONS
ISSN journal
00381098 → ACNP
Volume
111
Issue
3
Year of publication
1999
Pages
149 - 152
Database
ISI
SICI code
0038-1098(1999)111:3<149:IVITYH>2.0.ZU;2-7
Abstract
Low temperature specific heat measurements of YbHx, cubic hydride phase are reported and interpreted in the model of the intermediate valence system w ith ground state consisting of two narrow quasiparticle bands located at th e Fermi level. The band width and the gap values obtained are a function of the hydrogen concentration and they reproduce well the shape of the broad hump observed around 4 K in the temperature dependence of the specific heat . (C) 1999 Elsevier Science Ltd. All rights reserved.