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Abstract
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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.
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