MAGNETIC LAYER THICKNESS DEPENDENCE OF THE INTERLAYER EXCHANGE COUPLING IN (001) CO/CU/CO

被引：169
|
作者：
BLOEMEN, PJH [1 ]
JOHNSON, MT [1 ]
VANDEVORST, MTH [1 ]
COEHOORN, R [1 ]
DEVRIES, JJ [1 ]
JUNGBLUT, R [1 ]
DESTEGGE, JA [1 ]
REINDERS, A [1 ]
DEJONGE, WJM [1 ]
机构：
[1] PHILIPS RES LABS,5656 AA EINDHOVEN,NETHERLANDS
来源：
PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 05期
关键词：
D O I：
10.1103/PhysRevLett.72.764
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A dependence of the strength of the antiferromagnetic coupling across Cu on the Co layer thickness has been observed in an epitaxial fcc (001) triple wedge sample containing two Co wedges and one Cu wedge. Our result is consistent with an oscillation period of 6-7 angstrom Co - a value that agrees with the period of 3.5 monolayers of Co derived from the extremal wave vector that spans the ellipsoidal hole pocket centered at the X point of the fcc Co spin-down Fermi surface. This shows that the interlayer exchange coupling does not just involve an interaction localized at the interfaces, but is a property of the sandwich as a whole.
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收藏
页码：764 / 767
页数：4
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