TEMPERATURE-DEPENDENT EXCHANGE SPLITTING OF UNOCCUPIED ELECTRONIC STATES IN GD(0001)

Authors
FEDOROV AV STARKE K KAINDL G
Citation
Av. Fedorov et al., TEMPERATURE-DEPENDENT EXCHANGE SPLITTING OF UNOCCUPIED ELECTRONIC STATES IN GD(0001), Physical review. B, Condensed matter, 50(4), 1994, pp. 2739-2742
Citations number
14
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
50
Issue
4
Year of publication
1994
Pages
2739 - 2742
Database
ISI
SICI code
0163-1829(1994)50:4<2739:TESOUE>2.0.ZU;2-N
Abstract
Inverse photoemission with variable photon energy reveals the presence of an empty surface state on Gd(0001)GAMMABAR, which shifts towards t he Fermi energy (E(F)) with increasing temperature. Hereby, the surfac e state leads to a significant increase in the d-like density of state s at E(F), suggesting its involvement in the enhanced magnetic couplin g in the topmost surface layer of Gd(0001). A temperature-dependent ex change splitting is also observed for the empty 5d band that seems to vanish only well above the bulk Curie temperature.