论文标题
多效异质结构中的非对称自旋泵
Non-symmetric spin-pumping in a multiferroic heterostructure
论文作者
论文摘要
我们介绍在Al2O3（0001）和铁电Y-CUT LINBO3底物上生长的CO/PT双层中的自旋泵化实验。旋转泵是由表面声波引起的共振铁磁共振引起的。我们观察到，当磁化载体和声波矢量在PT/CO/LINBO3中逆转时，自旋泵浦效率都会有所不同。在pt/co/al2O3中未观察到这种现象。我们建议LINBO3的平面内极化是观察到的现象的起源。这些观察结果开辟了自旋泵送效率的电场控制的视野。
We present spin pumping experiments in Co/Pt bilayers grown on Al2O3(0001) and on ferroelectric Y-cut LiNbO3 substrates. Spin pumping is triggered by resonant ferromagnetic resonance induced by surface acoustic waves. We observe that spin pumping efficiency varies when both the magnetization vector and the acoustic wave vector are reversed in Pt/Co/LiNbO3. This phenomenon is not observed in Pt/Co/Al2O3. We propose that the in-plane electric polarization of LiNbO3 is at the origin of the observed phenomenon. These observations open up the perspective of an electric field control of spin pumping efficiency.
