標題: Spin and orbital magnetic moments of Fe3O4
作者: Huang, DJ
Chang, CF
Jeng, HT
Guo, GY
Lin, HJ
Wu, WB
Ku, HC
Fujimori, A
Takahashi, Y
Chen, CT
電子物理學系
Department of Electrophysics
公開日期: 13-Aug-2004
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.
URI: http://dx.doi.org/10.1103/PhysRevLett.93.077204
http://hdl.handle.net/11536/26477
ISSN: 0031-9007
DOI: 10.1103/PhysRevLett.93.077204
期刊: PHYSICAL REVIEW LETTERS
Volume: 93
Issue: 7
起始頁: 0
結束頁: 0
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