多铁性材料Ba0 .6Sr1.4Zn2Fe12O22中相干磁振子的超快泵浦-探测反射光谱探测
Detection of coherent magnons via ultrafast pump-probe reflectance spectroscopy in multiferroic Ba0.6Sr1.4Zn2Fe12O22
摘要：
本文报道了利用时域泵浦-探测反射光谱技术对多铁性Ba0.6Sr1.4Zn2Fe12O22的磁共振模式的探测。通过交换能量的皮秒热修改，磁亚晶格进动被相干激发。重要的是，这种进动被记录为由动态磁电效应引起的反射率的变化。因此，瞬态反射率提供了一个敏感的探针的磁化强度的动态材料与强磁电耦合，如多铁性，揭示了新的可能性，应用在自旋电子学和超快操纵的磁矩。
英文摘要：
We report the detection of a magnetic resonance mode in multiferroic Ba0.6Sr1.4Zn2Fe12O22 using time domain pump-probe reflectance spectroscopy. Magnetic sublattice precession is coherently excited via picosecond thermal modification of the exchange energy. Importantly, this precession is recorded as a change in reflectance caused by the dynamic magnetoelectric effect. Thus, transient reflectance provides a sensitive probe of magnetization dynamics in materials with strong magnetoelectric coupling, such as multiferroics, revealing new possibilities for application in spintronics and ultrafast manipulation of magnetic moments.
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