Magnetism of nanoscale Fe islands studied by spin-polarized scanning tunneling spectroscopy

被引：36

作者：

Kubetzka, A

Pietzsch, O

Bode, M

Wiesendanger, R

机构：

[1] Univ Hamburg, Inst Appl Phys, D-20355 Hamburg, Germany

[2] Univ Hamburg, Microstruct Res Ctr, D-20355 Hamburg, Germany

来源：

PHYSICAL REVIEW B | 2001年 / 63卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.63.140407

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have performed low-temperature (T=15 K) spin-polarized scanning tunneling spectroscopy of nanoscale Fe islands with a height of two atomic layers, grown on a stepped W(110) surface and surrounded by a closed monolayer (ML) Fe. These islands are single domain particles up to a coverage of 1.5 pseudomorphic ML and keep an antiferromagnetic out-of-plane ordering far beyond the onset of their coalescence. For small islands we observe a reorientation to in-plane magnetization between 2 and 3 nm island width due to exchange coupling to the in-plane magnetized ML.

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