Interface ferromagnetism and orbital reconstruction in BiFeO3-La0.7Sr0.3MnO3 heterostructures

P. Yu, J.S. Lee, S. Okamoto, M.D. Rossell, Mark Huijben, C.H. Yang, Q. He, Qiwei He, J.X. Zhang, S.Y. Yang, M.J. Lee, Q.M. Ramasse, R. Emi, Y.H. Chu, D.A. Arena, C.C. Kao, L.W. Martin, R. Ramesh