MAGNETIC RECONSTRUCTION OF THE GD(0001) SURFACE

被引：141

作者：

TANG, H

WELLER, D

WALKER, TG

SCOTT, JC

CHAPPERT, C

HOPSTER, H

PANG, AW

DESSAU, DS

PAPPAS, DP

机构：

[1] UNIV CALIF IRVINE,DEPT PHYS,IRVINE,CA 92717

[2] UNIV CALIF IRVINE,INST SURFACE & INTERFACE SCI,IRVINE,CA 92717

[3] IBM CORP,ALMADEN RES CTR,DIV RES,SAN JOSE,CA 95120

[4] STANFORD UNIV,STANFORD ELECTR LAB,STANFORD,CA 94309

[5] USN,RES LAB,WASHINGTON,DC 20375

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.71.444

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The surface magnetism of Gd(0001) films is studied using spin resolved electron spectroscopies. Both a canted surface magnetization vector out of the plane of the film and an enhanced surface magnetic ordering temperature 60 +/- 2 K higher than the bulk Curie temperature are observed. Our results show that the surface magnetic layer behaves as a separate entity from the bulk. The in-plane component of surface magnetization aligns ferromagnetically to the bulk. Spin resolved photoemission from the Gd 4f core levels shows almost-equal-to 65% spin polarization at 150 K, which extrapolates to almost-equal-to 91% at 0 K.

引用

页码：444 / 447

页数：4

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