Magnetic dead layers in Fe films induced by a lattice mismatch at an interface
Magnetic dead layers in Fe films induced by a lattice mismatch at an interface
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DOI：
10.1016/j.physb.2004.06.043
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发表时间：
2004-09-15
影响因子：
2.8
通讯作者：
Kakizaki, A
中科院分区：
文献类型：
--
作者：
Hayashi, K;Sawada, M;Kakizaki, A
用角分辨和自旋分辨光电子能谱、X射线光电子衍射、软X射线磁性圆二色性（XMCD）和全势缀加平面波能带计算研究了室温下生长在Rh（0 0 1）表面的Fe薄膜的磁性.在Rh（0 0 1）表面上，Fe膜开始以FCT（0 0 1）结构生长，晶格常数沿垂直于表面的方向沿着压缩，随着膜厚的增加，这种压缩逐渐解除。Fe膜在Rh（0 0 1）表面上的特征生长模式导致界面处存在2个Fe的磁死单层（ML）和超过2个ML的铁磁性，低温下的XMCD实验证实了这一点。的Fe膜的磁性的厚度依赖性是一致的总能量计算采用实验获得的层间距的结果。(C)2004 Elsevier B.V.保留所有权利。
The magnetism of Fe thin films grown at room temperature on the Rh(0 0 1) surface was studied by angle- and spin-resolved photoemission, X-ray photoelectron diffraction, soft X-ray magnetic circular dichroism (XMCD), and band calculations using full-potential augmented plane wave method. On the Rh(0 0 1) surface Fe films start to grow in a FCT(0 0 1) structure with a lattice constant compressed along the direction perpendicular to the surface and the compression is gradually released as the film thickness increases. The characteristic growth mode of the Fe films on the Rh(0 0 1) surface results in the existence of magnetically dead 2 monolayers (ML) of Fe at the interface and of ferromagnetism over 2 ML, which are realized by the XMCD experiments measured at low temperature. The thickness dependence of the magnetic properties of the Fe films is consistent with the results of total energy calculations adopting the experimentally obtained interlayer spacing. (C) 2004 Elsevier B.V. All rights reserved.