The vectorial control of magnetization by light.
The vectorial control of magnetization by light.
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DOI：
10.1038/ncomms1366
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发表时间：
2011-06-21
影响因子：
16.6
通讯作者：
Kuwata-Gonokami, Makoto
中科院分区：
文献类型：
--
作者：
Kanda, Natsuki;Higuchi, Takuya;Shimizu, Hirokatsu;Konishi, Kuniaki;Yoshioka, Kosuke;Kuwata-Gonokami, Makoto
相干光-物质相互作用的应用最近已扩展到磁化的超快控制。一个重要但尚未实现的技术是操纵磁化矢量运动，使其遵循任意设计的多维轨迹。在这里，我们展示了一个完整的操纵反铁磁NiO与一对偏振扭曲的飞秒激光脉冲的二维磁振荡。我们采用拉曼型非线性光学过程，其中磁振荡是脉冲诱导与控制的初始相位。它们的方位角遵循由材料的对称性确定的明确的选择规则。我们强调，激光脉冲的偏振角的时间变化，使我们能够控制的相位和振幅的两个简并模式，独立。这些结果导致了一个新的概念的矢量控制磁化光。光-物质相互作用可以用来操纵固体中的磁化，但是光控磁化矢量运动还没有被证明。在这里，在NiO的二维磁振荡的操作与光脉冲导致光的磁化矢量控制。
Application of coherent light–matter interactions has recently been extended to the ultrafast control of magnetization. An important but unrealized technique is the manipulation of magnetization vector motion to make it follow an arbitrarily designed multidimensional trajectory. Here we demonstrate a full manipulation of two-dimensional magnetic oscillations in antiferromagnetic NiO with a pair of polarization-twisted femtosecond laser pulses. We employ Raman-type nonlinear optical processes, wherein magnetic oscillations are impulsively induced with a controlled initial phase. Their azimuthal angle follows well-defined selection rules that have been determined by the symmetries of the materials. We emphasize that the temporal variation of the laser-pulse polarization angle enables us to control the phase and amplitude of the two degenerate modes, independently. These results lead to a new concept of the vectorial control of magnetization by light. Light–matter interactions can be used to manipulate magnetization in solids, but light-controlled magnetization vector motion has not been demonstrated. Here, two-dimensional magnetic oscillations in NiO are manipulated with optical pulses leading to vectorial control of magnetization by light.
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影响因子：
--
作者：
PERSHAN, PS
通讯作者：
PERSHAN, PS
影响因子：
--
作者：
ROTH, WL
通讯作者：
ROTH, WL
影响因子：
44.1
作者：
Kirilyuk, Andrei;Kimel, Alexey V.;Rasing, Theo
通讯作者：
Rasing, Theo
影响因子：
35
作者：
Kampfrath, Tobias;Sell, Alexander;Huber, Rupert
通讯作者：
Huber, Rupert
影响因子：
8.6
作者：
Higuchi, Takuya;Kanda, Natsuki;Kuwata-Gonokami, Makoto
通讯作者：
Kuwata-Gonokami, Makoto