Selection Rules for Light-Induced Magnetization of a Crystal with Threefold Symmetry: The Case of Antiferromagnetic NiO
Selection Rules for Light-Induced Magnetization of a Crystal with Threefold Symmetry: The Case of Antiferromagnetic NiO
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DOI：
10.1103/physrevlett.106.047401
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发表时间：
2011-01-24
影响因子：
8.6
通讯作者：
Kuwata-Gonokami, Makoto
中科院分区：
文献类型：
--
作者：
Higuchi, Takuya;Kanda, Natsuki;Kuwata-Gonokami, Makoto
我们提出拉曼诱导共线差频产生（DFG）作为一种方法来操纵动态磁化。当基本光束沿沿着三重旋转轴传播时，通过umklapp过程的旋转模拟，角动量守恒允许这种相干二阶光学过程。作为示范，我们在实验上获得了具有微多畴结构的反铁磁NiO单晶沿[111]轴沿着a方向的共线磁性差频偏极化特性，与理论预测很好地吻合。
We propose Raman-induced collinear difference-frequency generation (DFG) as a method to manipulate dynamical magnetization. When a fundamental beam propagates along a threefold rotational axis, this coherent second-order optical process is permitted by angular momentum conservation through the rotational analogue of the umklapp process. As a demonstration, we experimentally obtained polarization properties of collinear magnetic DFG along a [111] axis of a single crystal of antiferromagnetic NiO with micromultidomain structure, which excellently agreed with the theoretical prediction.