Antiferromagnetic structure in CoO

被引:23
作者
Shishidou, T [1 ]
Jo, T
机构
[1] Hiroshima Univ, Fac Sci, Dept Mat Sci, Higashihiroshima 7398526, Japan
[2] Hiroshima Univ, ADSM, Dept Quantum Matters, Higashihiroshima 7398526, Japan
关键词
CoO; antiferromagnetic structure; orbital moment; Hartree-Fock approximation; multiple-Q structure;
D O I
10.1143/JPSJ.67.2637
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Possible magnetic structures of CoO, which is known to be the second kind of antiferromagnet, are discussed for the cubic phase on the basis of the extended Hubbard model including the 3d spin-orbit coupling and the intra-atomic full 3d-3d multipole interaction in the framework of the Hartree-Fock (HF) approximation. In addition to a collinear single-Q structure; a noncollinear quadruple-Q one, both of which are compatible with the neutron diffraction experiment, are obtained as stable HF solutions. The magnitude of the Co orbital magnetic moment is shown to be as large as similar to 1 mu(B).
引用
收藏
页码:2637 / 2640
页数:4
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