Gigantic transverse x-ray magnetic circular dichroism in ultrathin Co in Au/Co/Au(001)

被引：4

作者：

Koide, T. ^{[1
]}

Mamiya, K. ^{[1
]}

Asakura, D. ^{[1
]}

Osafune, Y. ^{[2
]}

Fujimori, A. ^{[2
]}

Suzuki, Y. ^{[3
,4
]}

Katayama, T. ^{[4
]}

Yuasa, S. ^{[4
]}

机构：

[1] High Energy Accelerator Res Org, IMSS, Photon Factory, Tsukuba, Ibaraki 3050801, Japan

[2] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan

[3] Osaka Univ, Grad Sch Engn Sci, Toyonaka, Osaka 5608531, Japan

[4] Natl Inst Adv Ind Sci & Technol, NanoElectron Res Inst, Tsukuba, Ibaraki 3058568, Japan

来源：

1ST CONFERENCE ON LIGHT AND PARTICLE BEAMS IN MATERIALS SCIENCE 2013 (LPBMS2013) | 2014年 / 502卷

关键词：

ORBITAL-MOMENT; ANISOTROPY;

D O I：

10.1088/1742-6596/502/1/012002

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Transverse-geometry x-ray magnetic circular dichroism (TXMCD) measurements on Au/Co-staircase/Au(001) reveal the orbital origin of intrinsic in-plane magnetic anisotropy. A gigantic TXMCD was successfully observed at the Co L-3,L-2 edges for Co thickness (t(Co)) in the 2-monolayer regime. A TXMCD-sum-rule analysis shows a remarkable enhancement of an orbital-moment anisotropy (Delta m(orb)) and of an in-plane magnetic dipole moment (m(T)(parallel to)). Both Delta m(orb) and m(T)(parallel to). exhibit close similarity in t(Co) dependence, reflecting the in-plane magnetic anisotropy. These observations evidence that extremely strong, intrinsic, in-plane magnetic anisotropy originates from the anisotropic orbital part of the wave function, dominating the dipole-dipole-interaction-derived, extrinsic, in-plane magnetic anisotropy.

引用

页数：4

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