Consideration on Four-Spin Exchange Interactions in fcc Spin Lattice with Particular Reference to NiS2
Consideration on Four-Spin Exchange Interactions in fcc Spin Lattice with Particular Reference to NiS2
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DOI：
10.1143/jpsj.50.3268
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发表时间：
1981-10
影响因子：
1.7
通讯作者：
K. Yosida;S. Inagaki
中科院分区：
文献类型：
--
作者：
K. Yosida;S. Inagaki
为了了解黄铁矿结构NiS 2 的反常磁特性，研究了fcc自旋晶格中的四自旋交换相互作用。结果表明，从具有第一类自旋排序的有序相到第二类有序与第一类有序共存的另一有序相是可能的。此外，预计该低温相也具有由晶体各向异性引起的弱铁磁性。
Four-spin exchange interactions in fcc spin lattice are investigated for the purpose of understanding anomalous magnetic properties of NiS 2 with pyrite structure. It is shown that a phase transition is possible from the ordered phase with the first-kind spin ordering to the other ordered phase in which the second-kind ordering coexists with the first-kind ordering. Furthermore, this low temperature phase is expected also to have weak ferromagnetism induced by crystal-line anisotropy.