Electric field control of chiral magnetic domains in the high-temperature multiferroic CuO
Electric field control of chiral magnetic domains in the high-temperature multiferroic CuO
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DOI：
10.1103/physrevb.85.134428
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发表时间：
2012-04-17
影响因子：
3.7
通讯作者：
Boothroyd, A. T.
中科院分区：
文献类型：
--
作者：
Babkevich, P.;Poole, A.;Boothroyd, A. T.
我们利用偏振中子衍射研究了高温多铁氧化铜作为温度和外加电场的函数。我们发现，使用沿 b 轴施加的外部电场可以改变手性域的数量。借助表征分析，我们推导出多铁相中的不通约磁结构。我们得出的结论是，磁电耦合的起源与最近提出的基于逆 Dzyaloshinskii-Moriya 相互作用的模型是一致的。
We have studied the high-temperature multiferroic cupric oxide using polarized neutron diffraction as a function of temperature and applied electric field. We find that the chiral domain population can be varied using an external electric field applied along the b axis. With the aid of representation analysis, we deduce the incommensurate magnetic structure in the multiferroic phase. We conclude that the origin of the magnetoelectric coupling is consistent with recently proposed models which are based on the inverse Dzyaloshinskii-Moriya interaction.