Magnetic interaction between adsorbed NO and fcc Co(001) thin films studied by X-ray magnetic circular dichroism

被引:2
|
作者
Yonamoto, Y
Yokoyama, T
Amemiya, K
Matsumura, D
Kitagawa, S
Hamada, Y
Koide, T
Ohta, T
机构
[1] Univ Tokyo, Grad Sch Sci, Dept Chem, Bunkyo Ku, Tokyo 1130033, Japan
[2] Inst Mat Struct Sci, Photon Factory, Tsukuba, Ibaraki 3050801, Japan
关键词
X-ray magnetic circular dichroism (XMCD); thin fcc Co films; NO adsorption; orbital magnetic moment; spin magnetic moment; magnetic anisotropy; exchange interaction;
D O I
10.1143/JPSJ.71.607
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
N K-, O K- and Co L-III,L-II-edge X-ray magnetic circular dichroism (XMCD) was investigated for NO adsorbed on ultrathin fcc-Co(001) films which show both in-planar and perpendicular magnetic anisotropics. Large suppression of spin and orbital magnetic moments of Co was observed upon NO adsorption. Both N and O K-edge XMCD spectra show negative signs at the NO 2pi* resonance, irrespective of in-plane and perpendicular magnetic anisotropies. This finding implies the parallel alignment of the NO 2pi* orbital magnetic moments with the total magnetization. The results are comparatively discussed with the previous works on CO on Co and Ni films and are interpreted by a simple chemical bonding scheme.
引用
收藏
页码:607 / 612
页数:6
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