Spin and orbital magnetic moments of Fe3O4 -: art. no. 077204

被引：171

作者：

Huang, DJ ^{[1
]}

Chang, CF

Jeng, HT

Guo, GY

Lin, HJ

Wu, WB

Ku, HC

Fujimori, A

Takahashi, Y

Chen, CT

机构：

[1] Natl Synchrotron Radiat Res Ctr, Hsinchu 30077, Taiwan

[2] Natl Chiao Tung Univ, Dept Electrophys, Hsinchu 300, Taiwan

[3] Natl Ctr Theoret Sci, Div Phys, Hsinchu 300, Taiwan

[4] Natl Taiwan Univ, Dept Phys, Taipei 106, Taiwan

[5] Natl Tsing Hua Univ, Dept Phys, Hsinchu 300, Taiwan

[6] Univ Tokyo, Dept Complex Sci & Engn, Tokyo 1130033, Japan

[7] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan

[8] Himeji Inst Technol, Grad Sch, Himeji, Hyogo 6781297, Japan

[9] Himeji Inst Technol, Fac Sci, Himeji, Hyogo 6781297, Japan

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.93.077204

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present measurements of the spin and orbital magnetic moments of Fe3O4 by using SQUID and magnetic circular dichroism in soft x-ray absorption. The measurements show that Fe3O4 has a noninteger spin moment, in contrast to its predicted half-metallic feature. Fe3O4 also exhibits a large unquenched orbital moment. Calculations using the local density approximation including the Hubbard U method and the configuration interaction cluster-model suggest that strong correlations and spin-orbit interaction of the 3d electrons result in the noninteger spin and large orbital moments of Fe3O4.

引用

页码：077204 / 1

页数：4

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