Magnetism of Fe atoms deposited on W(001) and W(110): A theoretical study of the role of the interplanar relaxation

被引：4
|
作者：
Pizzagalli, L
Stoeffler, D
Gautier, F
机构：
[1] IPCMS-GEMME, C.N.R.S, 67037 Strasbourg Cedex
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1996年 / 154卷 / 02期
关键词：
D O I：
10.1016/0304-8853(95)00586-2
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have investigated the stability of several magnetic configurations of Fe adatoms deposited on W(001) and W(110) surfaces. We used a tight binding model and the real-space recursion technique to investigate several cluster configurations such as dimers, chains and islands. We have determined the variation of the magnetic moments and of the magnetic order as a function of the interplanar Fe-W distance, considered here as a parameter. We show that there is a competition between the Fe-Fe direct interaction favoring parallel (P) moments, and the coupling via the W substrate favoring antiparallel (AP) moments. The AP solution on the (001) open surface and the P solution on the (110) closed surface are found to be the most stable states.
引用
收藏
页码：213 / 220
页数：8
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