Temperature dependence of the exchange splitting of the surface state on Gd(0001): Evidence against spin-mixing behavior

被引：66

作者：

Weschke, E

Schussler-Langeheine, C

Meier, R

Fedorov, AV

Starke, K

Hubinger, F

Kaindl, G

机构：

[1] Institut für Experimentalphysik, Freie Universität Berlin, Berlin-Dahlem, D-14195

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.77.3415

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 that with increasing temperature both the occupied and the unoccupied parts 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 above Te cannot be ruled out.

引用

页码：3415 / 3418

页数：4

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