论文标题
频率依赖性的声子介导的单向磁化磁性在具有高度平衡镁的绝缘子上的金属中
Frequency-dependent Phonon-mediated Unidirectional Magnetoresistance in a Metal on an Insulator with Highly Nonequilibrium Magnons
论文作者
论文摘要
重金属（HM）/磁铁双层均具有许多磁盘敏感（MR）和自旋刻录效应。在这里，我们表明，与忽略MR和自旋热量效应之间相互作用的现有理论相比，旋转层效应和电子散射在磁绝缘子上产生的HM的单向MR要大得多。通过考虑镁化学电位和温度的局部非平衡，我们的分析模型将观察到的旋转毛皮物MR的频率依赖性和旋转Seebeck效应归因于热渗透深度的还原，从而接近1微米尺度的镁尺度自旋扩散长度。
Heavy metal (HM)/magnet bilayers host many magnetoresistances (MR) and spin caloritronic effects. Here we show that the spin Peltier effect and electron-phonon scattering produce much larger unidirectional MR of an HM on a magnetic insulator than existing theories that neglect the interplay between MR and spin caloritronic effects. By accounting for local nonequilibrium in both the magnon chemical potential and temperature, our analytical model attributes the observed frequency dependence of the spin Peltier MR and the spin Seebeck effect to the reduction of the thermal penetration depth, which approaches the 1 micron scale magnon spin diffusion length at high frequencies.
