论文标题
顶点校正对吉尔伯特在旋转泵送中的吉尔伯特阻尼加入二维电子气体中的影响
Effect of vertex corrections on the enhancement of Gilbert damping in spin pumping into a two-dimensional electron gas
论文作者
论文摘要
从理论上讲，我们考虑了顶点校正对从铁磁绝缘子（FI）泵送到二维电子气体（2DEG）的旋转泵的影响，其中Rashba和Dresselhaus旋转轨道相互作用共存。 FI中的吉尔伯特阻尼通过弹性自旋或镁吸收增强。我们表明，当两个自旋轨道相互作用的比率接近特殊值时，由于弹性轨道相互作用的比率在该值时，旋转弛豫时间差异时，由于磁杆弛豫时间差异，而由于镁吸收量仅显示较小的修饰时，由于顶点校正会大大增强吉尔伯特阻尼。我们还表明，由于弹性自旋流动而引起的谐振频率的变化以与吉尔伯特阻尼相似的方式强烈增强。
We theoretically consider the effect of vertex correction on spin pumping from a ferromagnetic insulator (FI) into a two-dimensional electron gas (2DEG) in which the Rashba and Dresselhaus spin-orbit interactions coexist. The Gilbert damping in the FI is enhanced by elastic spin-flipping or magnon absorption. We show that the Gilbert damping due to elastic spin-flipping is strongly enhanced by the vertex correction when the ratio of the two spin-orbit interactions is near a special value at which the spin relaxation time diverges while that due to magnon absorption shows only small modification. We also show that the shift in the resonant frequency due to elastic spin-flipping is strongly enhanced in a similar way as the Gilbert damping.
