Abstract Spin-current and pseudo-spin response to the electric and magnetic fields have been investigated within the Kubo approach. It has been realized that this problem can be regarded as the spin, pseudo-spin correlations and self-correlations. Calculations have been performed within the Dirac cone approximation. Meanwhile, the effect of gate induced Rashba coupling has been considered as a spin-dependent external control parameter where some experimental reports supports that spin–charge correlation can be controlled by the Rashba interaction Ghiasi et al. (2019). Calculations have been performed in the framework of the linear response regime in which the electric and magnetic perturbations are weak. Results of the present study show that the extreme frequencies of response functions could be considered as structural characteristic properties of the sample which are independent of motive and response quantities. Meanwhile, it has been shown that the response functions can effectively be controlled by the Rashba coupling.

中文翻译：

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石墨烯中的自旋电流和伪自旋密度响应函数

摘要 Kubo 方法研究了对电场和磁场的自旋电流和伪自旋响应。人们已经意识到，这个问题可以看作是自旋、伪自旋相关和自相关。已在狄拉克锥近似内进行计算。同时，门诱导的 Rashba 耦合效应被认为是一个依赖于自旋的外部控制参数，其中一些实验报告支持自旋电荷相关性可以通过 Rashba 相互作用 Ghiasi 等人来控制。(2019)。计算是在线性响应范围内进行的，其中电和磁扰动很弱。本研究的结果表明，响应函数的极端频率可以被认为是样本的结构特征，与动机和响应量无关。同时，已经表明响应函数可以通过 Rashba 耦合进行有效控制。