TEMPERATURE-DEPENDENCE OF THE EXCHANGE SPLITTING OF THE SURFACE-STATEON GD(0001) - EVIDENCE AGAINST SPIN-MIXING BEHAVIOR

Authors
WESCHKE E SCHUSSLERLANGEHEINE C MEIER R FEDOROV AV STARKE K HUBINGER F KAINDL G
Citation
E. Weschke et al., TEMPERATURE-DEPENDENCE OF THE EXCHANGE SPLITTING OF THE SURFACE-STATEON GD(0001) - EVIDENCE AGAINST SPIN-MIXING BEHAVIOR, Physical review letters, 77(16), 1996, pp. 3415-3418
Citations number
22
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
77
Issue
16
Year of publication
1996
Pages
3415 - 3418
Database
ISI
SICI code
0031-9007(1996)77:16<3415:TOTESO>2.0.ZU;2-Z
Abstract
We report on angle-resolved photoemission (PE) and inverse PE studies of Gd(0001) in the temperature range 60 to 400 K. The results show tha t with increasing temperature both the occupied and the unoccupied par ts of the d-like surface state at Gamma shift towards the Fermi level. This rules out a pure spin-mixing behavior as claimed recently on the basis of spin-resolved PE data. Instead; the temperature variation of the surface-state exchange splitting is Stoner-like, with an enhanced surface Curie temperature; nevertheless, a small residual splitting a bove Te cannot be ruled out.