Optical excitation of antiferromagnetic resonance in TmFeO3
Optical excitation of antiferromagnetic resonance in TmFeO3
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DOI：
10.1103/physrevb.74.060403
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发表时间：
2006-08-01
影响因子：
3.7
通讯作者：
Rasing, Th.
中科院分区：
文献类型：
--
作者：
Kimel, A. V.;Stanciu, C. D.;Rasing, Th.
飞秒激光脉冲被观察到通过热和非热机制在TmFeO 3中激发反铁磁共振。这些机制在两个不同的温度范围内占主导地位。分析表明，热和非热触发的自旋振荡具有不同的频率。实验结果表明，飞秒激光激发导致反铁磁共振频率在1 ps以内变化，证明了超快频率调制的可行性。
Femtosecond laser pulses are observed to excite antiferromagnetic resonances in TmFeO3 via both thermal and nonthermal mechanisms. These mechanisms dominate in two different temperature ranges. The analysis shows that thermally and nonthermally triggered spin oscillations have different frequencies. The experimental data reveal that femtosecond laser excitation results in frequency changes of the antiferromagnetic resonance within 1 ps, demonstrating the feasibility of ultrafast frequency modulation.