Spin current and magnetoelectric effect in noncollinear magnets
Spin current and magnetoelectric effect in noncollinear magnets
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DOI：
10.1103/physrevlett.95.057205
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发表时间：
2005-07-29
影响因子：
8.6
通讯作者：
Balatsky, AV
中科院分区：
文献类型：
--
作者：
Katsura, H;Nagaosa, N;Balatsky, AV
根据非共线磁体的微观电子模型，从理论上提出了一种基于自旋超电流的磁电效应新机制。在右箭头（i）上的两个磁矩（S）和右箭头（j）上的磁矩（S）之间产生的右箭头（ij）上的电极化（P）由右箭头上的（P）与e（ij）x（右箭头（i）上的（S）x右箭头（j）上的（S））成比例给出，其中（e）在右箭头（ij）上作为单位矢量连接的网站i和j的螺旋自旋结构和规范的理论解释的应用进行了讨论。
A new mechanism of the magnetoelectric effect based on the spin supercurrent is theoretically presented in terms of a microscopic electronic model for noncollinear magnets. The electric polarization (P) over right arrow (ij) produced between the two magnetic moments (S) over right arrow (i) and (S) over right arrow (j) is given by (P) over right arrow proportional to e(ij)x((S) over right arrow (i)x (S) over right arrow (j)) with (e) over right arrow (ij) being the unit vector connecting the sites i and j. Applications to the spiral spin structure and the gauge theoretical interpretation are discussed.