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In this work, by means of density functional theory we investigated Bi/BaTiO 3  and Bi/PbTiO 3  film heterostructures, which were expected to have spin-orbit splitting of the Rashba type. Due to the electron density gradient at the interfaces in these heterostructures, a current vortex arose associated with the electron spins. Structural and electronic properties of these systems are presented, in particular, band structures were calculated considering the spin-orbit interaction, and the values of the Rashba parameters characterizing the values of the spin-orbit splitting were extracted. An impact of interfacial contact layers and ferroelectric polarization onto the Rashba parameter values is analyzed.

Ab initio investigation of Bi/BaTiO 3 and Bi/PbTiO 3 heterostructures for spintronic applications