Citation
Vv. Kaminskii et al., The mechanism of the appearance of an electromotive force on heating of SmS single crystals, PHYS SOL ST, 43(6), 2001, pp. 1030-1032
Citations number
8
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICS OF THE SOLID STATE
ISSN journal
10637834
→ ACNP
Volume
43
Issue
6
Year of publication
2001
Pages
1030 - 1032
Database
ISI
SICI code
1063-7834(200106)43:6<1030:TMOTAO>2.0.ZU;2-J
Abstract
We analyze the experimental variation of the concentration of conduction el
ectrons in semiconducting SmS single crystals with increasing temperature w
ithin a shallow-impurity model. it is shown that the appearance of an elect
romotive force is due to accumulation of the critical concentration of free
electrons, which results in screening of the Coulomb potential of Sm2+ imp
urity ions that are responsible for the creation of donor levels with an ac
tivation energy of 0.045 eV in the band gap of SmS single crystals. (C) 200
1 MAIK "Nauka/Interperiodica".