HIGHLY SPIN-POLARIZED, NEARLY FREE-ELECTRON STATES IN FRONT OF CO(10(1)OVER-BAR-0)

被引：17

作者：

BODE, S ^{[1
]}

STARKE, K ^{[1
]}

RECH, P ^{[1
]}

KAINDL, G ^{[1
]}

机构：

[1] FREE UNIV BERLIN,INST PHYS CHEM,D-14195 BERLIN,GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.72.1072

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on the first observation of highly spin-polarized nearly free-electron image-potential states. At the surface Brillouin zone boundary (Y) over bar of Co(10 (1) over bar 0) spin-polarized inverse photoemission reveals large exchange splittings of 125 meV and 96 meV for two n = 1 image states, separated by 0.6 eV due to the surface corrugation potential. The exchange splittings are nearly as large as the intrinsic linewidths so that electrons trapped in these two-dimensional states are highly spin polarized. By their large exchange splitting these image states serve as a test case for a possible spin dependence of the surface-barrier potential.

引用

页码：1072 / 1075

页数：4

共 23 条

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