X-ray directional dichroism of a polar ferrimagnet
X-ray directional dichroism of a polar ferrimagnet
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DOI：
10.1103/physrevlett.92.137401
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发表时间：
2004-04-02
影响因子：
8.6
通讯作者：
Tokura, Y
中科院分区：
文献类型：
--
作者：
Kubota, M;Arima, T;Tokura, Y
在极性铁磁体GaFeO_3中，我们发现了一种新的磁光效应，称为x射线非互易方向二向色性(XNDD)，即在Fe离子K边附近的x射线吸收取决于x射线传播矢量是平行还是反平行于磁化强度和电极化矢量的外积。XNDD谱可以用来探测非中心对称体系中的局域磁性，例如磁性界面和纳米结构。
In a polar ferrimagnet GaFeO3, we have found a novel magneto-optical effect, termed x-ray nonreciprocal directional dichroism (XNDD), that the x-ray absorption at around the K edge of an Fe ion depends on whether the x-ray propagation vector is parallel or antiparallel to the outer product of the magnetization and electric-polarization vectors. The XNDD spectroscopy as demonstrated here can be a useful tool to probe the local magnetism in noncentrosymmetric systems such as magnetic interfaces and nanostructures.