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
收藏
页码：2688 / 2691
页数：4
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