We investigate epitaxial Pr0.65(Ca0.7Sr 0.3)0.35MnO3 thin film grown on orthorhombic (110) NdGaO3 substrate which breaks the lattice symmetry and affects the phase separated ground state. As a result of the anisotropic substrate strain, giant in-plane magnetic and magnetotransport anisotropy are observed, which is related to the anisotropic coupling and competition between the double-exchange interaction and the Jahn-Teller distortion. Furthermore, the in-plane anisotropy shows a distinct enhancement near the metal-insulator transition, implying a significant contribution from the phase separation to the anisotropic transport behaviors.
Bibliographical noteFunding Information:
This work was partly supported by the Singapore National Research Foundation, NSFC (Grant No. 11104090), and the Ministry of Education of China (Grant No. 309020). J.M.L. was supported by NSFC (Grant Nos. 50832002 and 11074113).
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)