Fig. 4: Density functional theory (DFT) calculated interfacial Rashba spin splitting. | Communications Physics

Fig. 4: Density functional theory (DFT) calculated interfacial Rashba spin splitting.

From: Enhanced spin-orbit torque by interfacial Rashba-Edelstein effect in an all-oxide epitaxial heterostructure

Fig. 4

(a), (b) The DFT calculated Fermi surfaces of SIO/NiO (a) without and (b) with considering the spin-orbit coupling (SOC). NiO is set as nonmagnetic. (c) Fermi surface of SIO/NiO with considering SOC, and NiO is set as antiferromagnetic. Arrows represent spin polarization vectors. Colors are used to distinguish energy bands and do not represent any physical quantities. Schematic of the (d) Ir-5d/Ni-3d orbital hybridization at the SIO/NiO interface and the (e) Ir-5d/Mn-3d orbital hybridization at the SIO/LSMO interface. (f) Schematic of the SOT action in SIO/NiO/LSMO heterostructure. The interfacial Rashba-Edelstein effect (REE) of SIO/NiO and the SHE of SIO provide the spin current source, and the spin angular momentum carried by the magnons is injected into the LSMO layer, thus driving the magnetic moment oscillation.

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