论文标题
旋转的旋转效果中的自旋积累
Spin accumulation in the spin Nernst effect
论文作者
论文摘要
旋转的Nernst效应是一种现象，其中自旋电流垂直于温度梯度。与自旋大厅效应相似，这种现象也会在边界处引起自旋积累。在这里，我们通过使用Green功能来研究温度梯度梯度梯度的自旋响应。我们的形式主义预测物理上可观察到的自旋积累，而没有关于自旋电流或磁化校正的定义的歧义。假设存在时间反转对称性以及不存在非弹性散射，我们证明了电响应和热响应之间的广义莫特关系。我们还发现，三维Luttinger模型的热自旋积累消失了，但对于$δ$ function noctional of-function born近似值的二维RASHBA模型而言并非零。
The spin Nernst effect is a phenomenon in which the spin current flows perpendicular to a temperature gradient. Similar to the spin Hall effect, this phenomenon also causes spin accumulation at the boundaries. Here, we study the spin response to the gradient of the temperature gradient with the use of Green's functions. Our formalism predicts physically observable spin accumulation without the ambiguity regarding the definition of the spin current or the magnetization correction. We prove the generalized Mott relation between the electric and thermal responses assuming the presence of time-reversal symmetry and the absence of inelastic scattering. We also find that thermal spin accumulation vanishes for the three-dimensional Luttinger model but is nonzero for the two-dimensional Rashba model with $δ$-function nonmagnetic disorder in the first Born approximation.
