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DOI | 10.1126/science.aaz4312 |
Electric field control of natural optical activity in a multiferroic helimagnet | |
Ryoji Masuda; Yoshio Kaneko; Yoshinori Tokura; Youtarou Takahashi | |
2021-04-30 | |
发表期刊 | Science |
出版年 | 2021 |
英文摘要 | The material cupric oxide exhibits magnetoelectric coupling, meaning that its magnetic properties can be controlled by electric fields. In its spin spiral phase, cupric oxide has a spiral magnetic ordering that can be right- or left-handed. Masuda et al. used electric fields to create purely left- or right-handed samples and then studied their optical activity. The samples exhibited natural optical activity, which the researchers were then able to control with electric fields. Science , this issue p. [496][1] Controlling the chiral degree of freedom in matter has long been an important issue for many fields of science. The spin-spiral order, which exhibits a strong magnetoelectric coupling, gives rise to chirality irrespective of the atomic arrangement of matter. Here, we report the resonantly enhanced natural optical activity on the electrically active magnetic excitation, that is, electromagnon, in multiferroic cupric oxide. The electric field control of the natural optical activity is demonstrated through magnetically induced chirality endowed with magnetoelectric coupling. These optical properties inherent to multiferroics may lead to optical devices based on the control of chirality. [1]: /lookup/doi/10.1126/science.aaz4312 |
领域 | 气候变化 ; 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/325036 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Ryoji Masuda,Yoshio Kaneko,Yoshinori Tokura,et al. Electric field control of natural optical activity in a multiferroic helimagnet[J]. Science,2021. |
APA | Ryoji Masuda,Yoshio Kaneko,Yoshinori Tokura,&Youtarou Takahashi.(2021).Electric field control of natural optical activity in a multiferroic helimagnet.Science. |
MLA | Ryoji Masuda,et al."Electric field control of natural optical activity in a multiferroic helimagnet".Science (2021). |
条目包含的文件 | 条目无相关文件。 |
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