Year: 2023
Type: article
Abstract: We study the spin injection from the ferromagnetic metallic oxide ${\mathrm{La}}_{0.7}{\mathrm{Sr}}_{0.3}{\mathrm{MnO}}_{3}$ (LSMO) into the normal metal Ag. LSMO is a highly resistive metallic oxide, but also fully spin polarized and therefore holds promise of generating highly polarized spin currents. Because of the high resistivity of the ferromagnet, and the lower resistivity of the normal metal, no conductivity mismatch issues are expected, as we demonstrate with model calculations. Our measurements unambiguously show spin-coherent injection and detection. LSMO appears to be a useful material for spin injection, but we also find the presence of an intrinsic tunnel barrier and a lower-than-expected degree of spin polarization, indicating a spin-active interface.
Source: Physical Review Materials
Authors: Yao Junxiang, Prateek Kumar, Mariona Cabero-Piris, Jan Aarts
Institutions: Leiden University, Universidad Complutense de Madrid
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4387908546