CALCULATED OSCILLATION PERIODS OF EXCHANGE COUPLING IN FE CR FE SANDWICHES

被引：39

作者：

MIRBT, S ^{[1
]}

SKRIVER, HL ^{[1
]}

ALDEN, M ^{[1
]}

JOHANSSON, B ^{[1
]}

机构：

[1] TECH UNIV DENMARK, DEPT PHYS, DK-2800 LYNGBY, DENMARK

来源：

SOLID STATE COMMUNICATIONS | 1993年 / 88卷 / 04期

关键词：

D O I：

10.1016/0038-1098(93)90519-S

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have performed an ab initio study of the oscillaton periods of the exchange-coupling in sandwiches of layers of Cr embedded in an Fe host, by means of a spin-polarized Green's function technique, based on the linear-muffin-tin-orbitals method within the tight-binding and atomic-sphere approximations. We treat Fe/Cr/Fe sandwiches with up to 12 monolayers of Cr and find that the calculated exchange coupling oscillates with a short-range period of 2 monolayers and a long-range period of approximately 8 monolayers (11 angstrom). This is in qualitative agreement with recent scanning electron microscopy measurements.

引用

页码：331 / 335

页数：5

共 46 条

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