合金团簇(FeCr)n中的非共线磁序和自旋轨道耦合效应*OA北大核心CSCDCSTPCD
Noncollinear magnetic order and spin-orbit coupling effect in (FeCr)n alloying clusters∗
利用密度泛函理论对合金团簇(FeCr)n (n 6)的几何结构、稳定性和磁性进行了系统的研究。研究结果表明,对n 3的合金团簇,其基态具有共线的反铁磁序;而对于n 4的合金团簇,其基态具有非共线磁序,因此在n=4时体系发生了共线磁序向非共线磁序的“相变”。此外,虽然3d过渡金属原子中电子的自旋轨道耦合效应比较弱,但计算结果表明对于某些小尺寸的合金团簇其轨道磁矩不能忽略。对非共线磁性团簇的成键性质以及产生磁序“相变”的物理起源进行了详细讨论。
Using density functional theory, the structures, stabilities and magnetic properties of (FeCr)n (n 6) alloying clusters are system-atically investigated. For smaller clusters with n 3, the results show that the ground-state system possesses collinear antiferromagnetic order. For n 4 cases, however, the ground-state cluster has noncollinear magnetic order. Therefore, there is a collinear-to-noncollinear magnetic transition at n=4 in (FeCr)n system…查看全部>>
(FeCr)n合金团簇密度泛函理论非共线磁序自旋轨道耦合效应
(FeCr)n alloying clustersdensity functional theorynoncollinear magnetic orderspin-orbit coupling effect
《物理学报》 2013 (14)
128-135,8
国家自然科学基金(批准号11104199)资助的课题.*Project supported by the National Natural Science Foundation of China (Grant No.11104199)
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