K-space Orientation Dependent of the Spin Texture in SF3PbI3 Perovskite Compounds

Abstract

The k-space spin textures in the first Brillouin zone plays an essential role in determining how spin-polarized currents can be manipulated for spin-orbitronics based devices. Here, achieving unidirectional spin textures called as a persistent spin helix is important to induce very long spin lifetime, which is useful for controlling spin-polarized currents. Using density functional theory (DFT) with fully relativistic calculations, we show that the unidirectional spin textures are achieved in the k-space of bulk SF3PbI3 oriented on [110]-direction. We found that the Rashba parameter strength of the spin-orbit induced spin splitting is sizable, indicating that this material is promising for energy saving spintronics.