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 |
显示于类别: | Articles |
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