论文标题
旋转混合电导和液化/锰矿界面的自旋磁磁性
Spin mixing conductance and spin magnetoresistance of iridate/manganite interface
论文作者
论文摘要
我们介绍了对旋转电流的实验研究的结果，该研究的旋转电流是在宽频带2-20 GHz的旋转泵送下测量的SRIRO3/LA0.7SR0.3MNO3异质结构，由RF Magnetron溅射在高温下。 XRD和TEM分析证实了薄膜在异质结构中的外延生长。考虑到各向异性磁阻的共发生，自旋电流估计为总响应的1/3。我们表明，旋转混合电导的真实部分和虚构部分对于在SRIRO3中具有强旋轨相互作用的异质结构都很有价值。通过异质结构中La0.7Sr0.3MNO3层的铁磁共振场的偏移来估计自旋混合电导的假想部分。从平面霍尔构型中测得的磁倍率的角依赖性评估了自旋磁循环。为了提取各向异性磁阻的影响，也测量了LA0.7SR0.3MNO3膜。发现异质结构的旋转角度高于接口PT/ LA0.7SR0.3MNO3。
We present results on experimental studies of spin current, measured under spin pumping at ferromag-netic resonance in wide frequency band 2-20 GHz for SrIrO3/La0.7Sr0.3MnO3 heterostructures fabricated by RF magnetron sputtering at high temperature. The epitaxial growth of the thin film in heterostructure by a cube-on-cube mechanism was confirmed by XRD and TEM analysis. Taking into account the con-tribution of anisotropic magnetoresistance the spin current was estimated as 1/3 of the total response. We show that both real and imaginary parts of spin mixing conductance are valuable for heterostructures with strong spin-orbit interaction in SrIrO3. Imaginary part of spin mixing conductance was estimated by means of shift of ferromagnetic resonance field of La0.7Sr0.3MnO3 layer in heterostructure. The spin mag-netoresistance was evaluated from angular dependencies of magnetoresistance measured in planar Hall configuration. In order to extract the influence of anisotropic magnetoresistance a La0.7Sr0.3MnO3 film was measured as well. The spin Hall angle for heterostructure was found higher than for interface Pt/ La0.7Sr0.3MnO3.
