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An argument why the spinterface model cannot explain the chirality induced spin selectivity effect
1Department of Physics and Astronomy, Uppsala University, P.O. Box 516, 75 237 Uppsala, Sweden.
Abstract:
In the context of chirality induced spin selectivity effect, it has been argued that a chiral molecule when adsorbed on a metal facilitates the formation of a local spin moment at the interface between the metal and molecule, given a strong spin-orbit coupling in the metal. The possibility for such spin moment formation is analyzed in terms of general arguments and effective modeling of a pertinent setup. The conclusion from this analysis is that a strong spin-orbit coupling in the metal does not provide a sufficient mechanism to sustain a stabilized spin moment at the interface. It is, moreover, shown that an electron flux into or out of the molecule does not provide conditions for a spin moment formation, regardless of whether the flux is spin-polarized or not.
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