Theoretical study of magnetic layers of nickel on copper; dead or alive?

被引：33

作者：

Ernst, A ^{[1
]}

Lueders, M ^{[1
]}

Temmerman, WM ^{[1
]}

Szotek, Z ^{[1
]}

van der Laan, G ^{[1
]}

机构：

[1] SERC, Daresbury Lab, Warrington WA4 4AD, Cheshire, England

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2000年 / 12卷 / 26期

关键词：

D O I：

10.1088/0953-8984/12/26/306

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We studied the persistence of magnetism in ultrathin nickel films on copper. Layer-dependent magnetic moments in Ni films on the (001), (110) and (111) surfaces of Cu have been calculated using the Korringa-Kohn-Rostoker Green's function method. The results show that, at temperature T = 0, a single nickel monolayer is ferromagnetic on Cu(001) and Cu(110) but magnetically 'dead' on the more closely packed Cu(lll) surface. Films of two and more layers of Ni are always ferromagnetic, with the magnetic moment enhanced in the surface layer hut strongly reduced in the interface layer. Due to the short screening length, both the effect of the interface and that of the surface are confined to only a few atomic layers.

引用

页码：5599 / 5605

页数：7

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