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

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2002年 / 71卷 / 02期

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

页码：607 / 612

页数：6

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