ELECTRONIC-STRUCTURE OF LANTHANUM HYDRIDES WITH SWITCHABLE OPTICAL-PROPERTIES

Authors
NG KK ZHANG FC ANISIMOV VI RICE TM
Citation
Kk. Ng et al., ELECTRONIC-STRUCTURE OF LANTHANUM HYDRIDES WITH SWITCHABLE OPTICAL-PROPERTIES, Physical review letters, 78(7), 1997, pp. 1311-1314
Citations number
13
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
78
Issue
7
Year of publication
1997
Pages
1311 - 1314
Database
ISI
SICI code
0031-9007(1997)78:7<1311:EOLHWS>2.0.ZU;2-B
Abstract
Recent dramatic changes in the optical properties of LaH2+x and YH2+x films discovered by Huiberts et al. [Nature (London) 380, 231 (1996)] suggest their electronic structure is described best by a local model. Electron correlation is important in H- centers and in explaining the transparent insulating behavior of LaH3. The metal-insulator transiti on at x similar to 0.8 takes place in a band of highly localized state s centered on the H vacancies in the LaH3 structure.