Interface ferromagnetism and orbital reconstruction in BiFeO3-La0.7Sr0.3MnO3heterostructures

Autor: Yu, P, Lee, JS, Okamoto, S, Rossell, MD, Huijben, M, Yang, CH, He, Q, Zhang, JX, Yang, SY, Lee, MJ, Ramasse, QM, Erni, R, Chu, YH, Arena, DA, Kao, CC, Martin, LW, Ramesh, R
Jazyk: angličtina
Rok vydání: 2010
Předmět:
Zdroj: Yu, P; Lee, JS; Okamoto, S; Rossell, MD; Huijben, M; Yang, CH; et al.(2010). Interface ferromagnetism and orbital reconstruction in BiFeO3-La0.7Sr0.3MnO3heterostructures. Physical Review Letters, 105(2). doi: 10.1103/PhysRevLett.105.027201. UC Berkeley: Retrieved from: http://www.escholarship.org/uc/item/5sp0j3b8
DOI: 10.1103/PhysRevLett.105.027201.
Popis: We report the formation of a novel ferromagnetic state in the antiferromagnet BiFeO3at the interface with ferromagnet La0.7Sr0.3MnO3. Using x-ray magnetic circular dichroism at Mn and Fe L2,3 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. © 2010 The American Physical Society.
Databáze: OpenAIRE