Ultrafast modulation of exchange-coupling induced anisotropy in Fe/CoO by laser induced charge transfer
Ultrafast modulation of exchange-coupling induced anisotropy in Fe/CoO by laser induced charge transfer
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通过激光诱导电荷转移超快调制 Fe/CoO 中交换耦合诱导的各向异性
DOI：
10.1063/1.4982236
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发表时间：
2017-04
影响因子：
4
通讯作者：
Zhao H B
中科院分区：
文献类型：
--
作者：
Zheng Z;Li Q;Shi J Y;Gu T;Wang Z Y;Shen L Q;Jin F;Yuan H C;Zhang R J;Chen L Y;Wu Y Z;Zhao H B
Optical control of magnetic anisotropy in ferromagnetic (FM) metals via non-thermal effects offers an intriguing route for the ultrafast magnetization control. Here, we report on strong modification of exchange-coupling induced uniaxial magnetic anisotropy (UMA) in Fe/CoO below the Neel temperature of CoO owing to the charge transfer excited by ultrafast laser pulses. This UMA modification by nonthermal effects is manifested as much smaller frequencies of the Fe spin precession in the initial 100-ps time range under the 400-nm pump with charge transfer excitation, compared to the 800-nm pump with pure thermal effects. From the time-dependent frequency shift under a moderate pump fluence of 0.5 mJ/cm2, we determined the magnitude of the UMA attenuation with a highest value of more than 1000 Oe in a duration of 100 ps. The strong UMA attenuation is attributed to the large suppression of the interface exchange coupling as a result of the diminishment of antiferromagnetic (AFM) spin order in CoO. Our results ...
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影响因子：
3.2
作者：
T. Ambrose;C. Chien
通讯作者：
T. Ambrose;C. Chien
影响因子：
8.6
作者：
Turgut, Emrah;La-o-Vorakiat, Chan;Mathias, Stefan
通讯作者：
Mathias, Stefan
通过平面霍尔效应研究外延 Fe/CoO/MgO(001) 体系中温度相关的磁各向异性
影响因子：
4
作者：
Cao, W. N.;Li, J.;Wu, Y. Z.
通讯作者：
Wu, Y. Z.
通过光激发电荷转移过程实现超快自旋交换耦合扭矩
影响因子：
16.6
作者：
Ma X;Fang F;Li Q;Zhu J;Yang Y;Wu YZ;Zhao HB;Lüpke G
通讯作者：
Lüpke G
DOI：
--
发表时间：
2010-07
期刊：
Lawrence Berkeley National Laboratory
影响因子：
--
作者：
J. Wu;J. Park;W. Kim;E. Arenholz;M. Liberati;A. Scholl;Y. Wu;C. Hwang;Z. Qiu
通讯作者：
J. Wu;J. Park;W. Kim;E. Arenholz;M. Liberati;A. Scholl;Y. Wu;C. Hwang;Z. Qiu