Ultrafast spin and lattice dynamics in antiferromagnetic Cr2O3
Ultrafast spin and lattice dynamics in antiferromagnetic Cr2O3
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DOI：
10.1103/physrevb.75.155406
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发表时间：
2007-04
影响因子：
3.7
通讯作者：
T. Satoh;B. V. Aken;N. P. Duong;T. Lottermoser;M. Fiebig
中科院分区：
文献类型：
--
作者：
T. Satoh;B. V. Aken;N. P. Duong;T. Lottermoser;M. Fiebig
使用振幅和相位分辨光学二次谐波产生作为磁性和晶体学子系统的探针，研究了强激光脉冲激发后反铁磁体 Cr 2 O 3 的自旋和晶格动力学。退磁发生在从⪡1到∼7ps的三个时间尺度上。与铁磁化合物相比，这是两个数量级的更快的响应，并且观察到了额外的自旋晶格相互作用通道。
The spin and lattice dynamics of antiferromagnetic bulk Cr 2 O 3 after excitation with an intense laser pulse were investigated using amplitude and phase resolved optical second-harmonic generation as probe of the magnetic and crystallographic subsystems. Demagnetization occurs on three time scales ranging from ⪡1to∼7ps . In comparison to ferromagnetic compounds, this is a two orders of magnitude faster response and an additional spin-lattice interaction channel is observed.