STRUCTURAL DEPENDENCE OF THE OSCILLATORY EXCHANGE INTERACTION ACROSS CU LAYERS

被引：275

作者：

JOHNSON, MT ^{[1
]}

PURCELL, ST ^{[1
]}

MCGEE, NWE ^{[1
]}

COEHOORN, R ^{[1
]}

DESTEGGE, J ^{[1
]}

HOVING, W ^{[1
]}

机构：

[1] EINDHOVEN UNIV TECHNOL,DEPT PHYS,5600 MB EINDHOVEN,NETHERLANDS

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.68.2688

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A structure-dependent exchange coupling across wedge-shaped Cu layers in fcc (100) Co/Cu/Co and bcc (100) Fe/Cu/Fe epitaxial sandwiches has been determined from analysis of longitudinal magneto-optical Kerr effect hysteresis loops. In the fcc Co/Cu/Co system, the variation of the coupling with Cu thickness can be described as a superposition of two oscillatory terms, with periods of 2.6 and 8.0 monolayers (ML). The bcc Fe/Cu/Fe system shows oscillations with a period of 2 ML. These periodicities are related to the Fermi surface dimensions and topology of fcc and hypothetical bcc bulk Cu.

引用

页码：2688 / 2691

页数：4

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