标题: Interface Ferromagnetism and Orbital Reconstruction in BiFeO3-La0.7Sr0.3MnO3 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.
材料科学与工程学系
Department of Materials Science and Engineering
公开日期: 6-七月-2010
摘要: We report the formation of a novel ferromagnetic state in the antiferromagnet BiFeO3 at the interface with ferromagnet La0.7Sr0.3MnO3. Using x-ray magnetic circular dichroism at Mn and Fe L-2,L-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/11536/149981
ISSN: 0031-9007
DOI: 10.1103/PhysRevLett.105.027201
期刊: PHYSICAL REVIEW LETTERS
Volume: 105
Issue: 2
起始页: 0
结束页: 0
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