Perpendicular magnetic anisotropy caused by interfacial hybridization via enhanced orbital moment in Co/Pt multilayers: Magnetic circular x-ray dichroism study

被引：373

作者：

Nakajima, N ^{[1
]}

Koide, T

Shidara, T

Miyauchi, H

Fukutani, I

Fujimori, A

Iio, K

Katayama, T

Nyvlt, M

Suzuki, Y

机构：

[1] High Energy Accelerator Res Org, IMSS, Photon Factory, Tsukuba, Ibaraki 305, Japan

[2] Univ Tsukuba, Inst Phys, Tsukuba, Ibaraki 305, Japan

[3] Univ Tokyo, Dept Phys, Bunkyou Ku, Tokyo 113, Japan

[4] Tokyo Inst Technol, Dept Phys, Meguro Ku, Tokyo 152, Japan

[5] Electrotech Lab, Tsukuba, Ibaraki 305, Japan

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.81.5229

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Magnetic circular x-ray dichroism (MCXD) measurements-at the Co L-2,L-3 and M-2,M-3 core edges reveal a strongly enhanced perpendicular Co orbital moment (m(orb)) in Co/Pt multilayers which show perpendicular magnetic anisotropy (PMA). MCXD signals at the Pt N-6,N-7 and O-2,O-3 edges, arising from Pt 5d-Co 3d hybridization, persist for the thinnest Co layer. The hybridization is shown to be localized at the Co/Pt interface and to cause the m(orb) enhancement which drives PMA. Unambiguous evidence for a transition from fee to hcp Co is presented and m(orb) of bulk fee Co has been determined to be 0.11 mu(B) for the first time.

引用

页码：5229 / 5232

页数：4

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