CO Adsorption Effects on the Magnetism and Surface Structure of Fe/Cu(001)
CO Adsorption Effects on the Magnetism and Surface Structure of Fe/Cu(001)
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DOI：
10.1380/ejssnt.2008.233
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发表时间：
2008-11
影响因子：
0.7
通讯作者：
H. Abe;K. Amemiya;J. Miyawaki;E. O. Sako;M. Sakamaki;D. Matsumura;T. Ohtsuki;E. Sakai;T. Ohta
中科院分区：
文献类型：
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作者：
H. Abe;K. Amemiya;J. Miyawaki;E. O. Sako;M. Sakamaki;D. Matsumura;T. Ohtsuki;E. Sakai;T. Ohta
在100 K温度下研究了CO吸附对Cu（001）衬底上Fe薄膜磁性的影响。CO的吸附对2 ML Fe膜的磁性没有影响，但对4 ML Fe膜却引起了自旋重取向从垂直磁化向面内磁化的转变。它也导致明显的磁化强度下降，这是由于在表面磁化强度的深度分辨的XMCD谱分析的减少。磁化强度的降低可能源于薄膜表面结构的重构。结果表明，吸附CO后，4 ML Fe膜的表面结构变为类bcc结构，而吸附CO后，2 ML Fe膜的结构不会发生变化，因为其磁化强度没有变化. [DOI：10.1380/ejssnt.2008.233]
Effects of CO adsorption on the magnetic properties of Fe films on Cu(001) were studied at 100 K as a function of the film thickness. CO adsorption does not affect the magnetic property of 2 ML Fe film but induces the spin reorientation transition from perpendicular to in-plane magnetization for 4 ML Fe film. It also causes the apparent decrease of magnetization, which is attributed to the reduction in surface magnetization by analyses of depth-resolved XMCD spectra. The reduction of the magnetization can be originated from a reconstruction of the surface structure of the films. It was suggested that the surface structures of the 4 ML Fe film are changed to a bcc-like structure upon CO adsorption, while the structure of the 2 ML Fe film could not change by CO adsorption because its magnetization is unchanged. [DOI: 10.1380/ejssnt.2008.233]