Direct observation of ferromagnetic spin polarization in gold nanoparticles

被引：286

作者：

Yamamoto, Y

Miura, T

Suzuki, M

Kawamura, N

Miyagawa, H

Nakamura, T

Kobayashi, K

Teranishi, T

Hori, H

机构：

[1] JAIST, Sch Mat Sci, Tatsunokuchi, Ishikawa 9231292, Japan

[2] SPring8, JASRI, Japan Synchrotron Radiat Res Inst, Mikazuki, Sayou 6795198, Japan

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.93.116801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the first direct observation of ferromagnetic spin polarization of Au nanoparticles with a mean diameter of 1.9 nm using x-ray magnetic circular dichroism (XMCD). Owing to the element selectivity of XMCD, only the gold magnetization is explored. Magnetization of gold atoms as estimated by XMCD shows a good agreement with results obtained by conventional magnetometry. This evidences intrinsic spin polarization in nanosized gold.

引用

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页码：116801 / 1

页数：4

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