INDUCED SPIN POLARIZATION AND INTERLAYER EXCHANGE COUPLING OF THE SYSTEMS RH/CO(0001) AND RU/CO(0001)

被引：9

作者：

RAMPE, A

HARTMANN, D

WEBER, W

POPOVIC, S

REESE, M

GUNTHERODT, G

机构：

[1] 2. Physikalisches Institut, Rheinisch-Westfälische Technische Hochschule Aachen

来源：

PHYSICAL REVIEW B | 1995年 / 51卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.51.3230

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Spin- and angle-resolved photoemission spectroscopy in an off-normal geometry at h=21.2 eV proves that one atomic layer (AL) of Rh or Ru on Co(0001) possesses an induced positive spin polarization at the investigated k point. The oscillatory interlayer exchange coupling in MBE-grown Co/Rh/Co and Co/Ru/Co trilayers has been probed by the spin polarization of the secondary electrons from the top Co layer. The oscillation period lengths found are Rh=81 AL and Ru=91 AL. In spite of the induced positive spin polarization at the Fermi level the interlayer coupling through Ru and Rh is antiferromagnetic already for an interlayer thickness of 1.5 AL Ru and 2.5 AL Rh. © 1995 The American Physical Society.

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页码：3230 / 3233

页数：4

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