论文标题
Kretschmann配置中的光学诱导电子自旋电流
Optically induced electron spin currents in the Kretschmann configuration
论文作者
论文摘要
我们研究了通过Kretschmann构型中的等离子模式光学诱导的电子自旋电流。通过利用散射矩阵形式主义，我们考虑了与外部激光驱动器耦合的等离子体模式，并计算金属中的诱导磁化。等离子体模式的空间分布是通过诱导的磁化遗传的，该磁化是无与伦比的有效磁场，并导致船尾grach效应驱动金属中的电子自旋电流。我们使用源项求解自旋扩散方程，以分析旋转电流，这是金属的自旋扩散长度，外部驱动器的频率和入射角的函数。
We investigate electron spin currents induced optically via plasmonic modes in the Kretschmann configuration. By utilising the scattering matrix formalism, we take the plasmonic mode coupled to external laser drive into consideration and calculate induced magnetisation in the metal. The spatial distribution of the plasmonic mode is inherited by the induced magnetisation, which acts as inhomogeneous effective magnetic field and causes the Stern-Gerlach effect to drive electron spin currents in the metal. We solve spin diffusion equation with a source term to analyse the spin current as a function of the spin diffusion length of the metal, the frequency and the incident angle of the external drive.
