However, there is no existing quantitative theory to compare with our results. We conclude that non-trivial EHR observed in Pt/LCO and other similar hybrids demands further theoretical and experimental investigations in order to clarify the dominating mechanisms. On the hand, it is also interesting to investigate the impacts of possible spin state change in LCO film on the spin transport properties of Pt/LCO hybrids.

CONCLUSION
==========

In summary, we carried out the measurements of transverse Hall resistance R$_{xy}$ and longitudinal resistance R$_{xx}$ on Pt/LCO hybrids. All three types of hybrids, including Pt/LCO/LAO, Pt/LCO/LSAT, and Pt/LCO/STO, exhibit extraordinary Hall resistance and unconventional magnetoresistance below the Curie temperature of LCO films. The amplitude of unconventional magnetoresistance and the extraordinary Hall resistance on Pt/LCO hybrids are comparable to Pd/YIG and Pt/YIG hybrids. However, the observed spin transport properties can not be consistently explained by the existing theories, further investigations are needed to clarify this issue.

This work is financially supported by the National Natural Science Foundation of China (Grant Nos. 11274321, 11404349, 11174302, 51502314). S. Zhang was partially supported by the National Science Foundation (Grant No. ECCS-1404542).

[10]{}

Y. Ohno, D. K. Young, B. Beschoten, F. Matsukura, H. Ohno, and D. D. Awschalom, 