Interfacial properties of LaMnO3/LaNiO3 superlattices grown along (001) and (111) orientations
Interfacial properties of LaMnO3/LaNiO3 superlattices grown along (001) and (111) orientations
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DOI：
10.1103/physrevb.92.014426
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发表时间：
2015-07-29
影响因子：
3.7
通讯作者：
Staub, U.
中科院分区：
文献类型：
--
作者：
Piamonteze, C.;Gibert, M.;Staub, U.
我们对沿（001）和（111）取向生长的LaMnO3/LaNiO3超晶格的Ni和mn的L-3、L-2边缘进行了x射线吸收光谱和x射线磁圆二色性（XMCD）检测。我们的结果显示了一个显著的XMCD信号，因此存在磁矩局部定位在Ni和Mn上，它们彼此是铁磁耦合的。x射线吸收实验显示（111）的Ni和Mn之间的电荷转移比（001）的更大。这些结果与这种超晶格的理论预测进行了比较。
We have employed x-ray absorption spectroscopy and x-ray magnetic circular dichroism (XMCD) at the Ni andMn L-3,L-2 edges in LaMnO3/LaNiO3 superlattices grown along (001) and (111) orientations. Our results show a significant XMCD signal and thus the presence of magnetic moments localized on both Ni and Mn, which are ferromagnetically coupled to each other. X-ray absorption experiments reveal a charge transfer between Ni and Mn which is larger for (111) than for (001) superlattices. These results are compared to theoretical predictions for such superlattices.