Directional electric-field induced transformation from skyrmion lattice to distinct helices in multiferroic Cu2OSeO3
Directional electric-field induced transformation from skyrmion lattice to distinct helices in multiferroic Cu2OSeO3
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DOI：
10.1103/physrevb.95.184411
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发表时间：
2017-05
影响因子：
3.7
通讯作者：
Y. Okamura;Y. Yamasaki;D. Morikawa;T. Honda;V. Ukleev;H. Nakao;Y. Murakami;K. Shibata;F. Kagawa;S. Seki;T. Arima;Y. Tokura
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文献类型：
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作者：
Y. Okamura;Y. Yamasaki;D. Morikawa;T. Honda;V. Ukleev;H. Nakao;Y. Murakami;K. Shibata;F. Kagawa;S. Seki;T. Arima;Y. Tokura
利用Cu ${L}_{3}$吸收边的小角软x射线散射，研究了多铁质${\ mathm {Cu}}_{2}{\ mathm {OSeO}}_{3}$中天子晶格与螺旋之间的电场感应磁相变。通过电场的作用，斯基子晶格根据电场的符号变换成具有不同调制矢量的螺旋。特别是，除非施加电场，否则在正电场下实现的螺旋永远不会出现。
We have investigated electric-field induced magnetic phase transition between the skyrmion lattice and the helix in the multiferroic ${\mathrm{Cu}}_{2}{\mathrm{OSeO}}_{3}$ by means of small-angle soft x-ray scattering at the Cu ${L}_{3}$ absorption edge. By application of electric fields, the skyrmion lattice transforms into helices with distinct modulation vectors depending on the sign of the electric field. In particular, the helix realized under the positive electric field never appears unless the electric field is applied.