Fig. 3: Spin pumping measurements.
a Magnetic field μ0H (// [110] of the STO substrate) dependence of the microwave absorption derivative for the LSMO/LTO/STO sample at 15 K with MP = 50 mW. b Magnetic field μ0H dependencies of V at 15 K measured for the LSMO/LTO/STO sample with various MP values ranging from 30 to 100 mW. In the electron-spin resonance system, a microwave magnetic field hrf is applied along the [\(1\bar{1}0\)] direction of the STO substrate. The inset shows the linear relation between the microwave power MP and Vsym. c H dependence of jC,0°2D/hrf2 measured for the LSMO/LTO/STO sample at various temperatures ranging from 15 to 300 K with MP = 50 mW. The inset shows the μ0H dependence of V0°. d Comparison of jC,0°2D/hrf2 between LSMO/LTO/STO, LSMO/LTO/LSAT and LSMO/STO measured with MP = 50 mW. The measurements are conducted at 15 K. The inset shows an enlarged figure of the μ0H dependence of jC,0°2D/hrf2 measured for the LSMO/LTO/LSAT sample. e Summary of the temperature dependences of λIEE(= jC,sym2D\(/{j}_{{{{{{\rm{S}}}}}}}^{0}\)) in various material systems.
