Electric field control of natural optical activity in a multiferroic helimagnet

doi:10.1126/science.aaz4312

GSTDTAP > 气候变化

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).