Fig. 6
Theoretical model of EPS-modulated spin injection. a–b Illustrated EPS-modulated spin current into the Alq3 space layer under the co-existed FM/COI phase and fully FM phase, respectively. The yellow dots indicate the injected spin-aligned carriers and the green arrows indicate the direction of spin polarization. The spin-aligned carriers undergo a spin-flip scattering at the FM-COI boundary through the LPCMO thin film. It results in a reduced spin current into the Alq3 molecules compared to that in a fully FM phase of the LPCMO film in the absence of FM/COI boundary. c, d Equivalent circuit models in the parallel and antiparallel configurations under the co-existed FM/COI phase, respectively. Resistors are schematic with color codes, not drawn to accurate values. e Obtained MR values of the LPCMO-OSV device as a function of temperature and pre-set magnetic field. f normalized MR(7 T)/MR(1 T) as a function of temperature. g, h Calculated Rsf and normalized Rsf(7 T)/Rsf(1 T) from the proposed theoretical model as a function of temperature, consistent with the experimental results in panels e and f
