標題: Interface Ferromagnetism and Orbital Reconstruction in BiFeO(3)-La(0.7)Sr(0.3)MnO(3) Heterostructures
作者: Yu, P.
Lee, J. -S.
Okamoto, S.
Rossell, M. D.
Huijben, M.
Yang, C. -H.
He, Q.
Zhang, J. X.
Yang, S. Y.
Lee, M. J.
Ramasse, Q. M.
Erni, R.
Chu, Y. -H.
Arena, D. A.
Kao, C. -C.
Martin, L. W.
Ramesh, R.
材料科學與工程學系
Department of Materials Science and Engineering
公開日期: 6-七月-2010
摘要: We report the formation of a novel ferromagnetic state in the antiferromagnet BiFeO(3) at the interface with ferromagnet La(0.7)Sr(0.3)MnO(3). Using x-ray magnetic circular dichroism at Mn and Fe L(2,3) edges, we discovered that the development of this ferromagnetic spin structure is strongly associated with the onset of a significant exchange bias. Our results demonstrate that the magnetic state is directly related to an electronic orbital reconstruction at the interface, which is supported by the linearly polarized x-ray absorption measurement at the oxygen K edge.
URI: http://dx.doi.org/10.1103/PhysRevLett.105.027201
http://hdl.handle.net/11536/5147
ISSN: 0031-9007
DOI: 10.1103/PhysRevLett.105.027201
期刊: PHYSICAL REVIEW LETTERS
Volume: 105
Issue: 2
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