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Electric control of the magnetization in BiFeO3/LaFeO3 superlattices

Zeila Zanolli, Jacek C. Wojdeł, Jorge Íñiguez, and Philippe Ghosez
Phys. Rev. B 88, 060102(R) – Published 15 August 2013
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Abstract

First-principles techniques are used to investigate the behavior of BiFeO3/LaFeO3 perovskite oxide superlattices epitaxially grown on a (001)-SrTiO3 substrate. The calculations show that 1/1 superlattices exhibit a Pmc21 ground state combining a trilinear coupling of one polar and two oxygen rotational lattice modes, and weak ferromagnetism. The microscopic mechanism allowing one to manipulate the magnetization with an electric field in such systems is presented and its dependence on strain and chemical substitution is discussed. BiFeO3/LaFeO3 artificial superlattices appear to be good candidates to achieve electric switching of magnetization at room temperature.

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  • Received 18 May 2013

DOI:https://doi.org/10.1103/PhysRevB.88.060102

©2013 American Physical Society

Authors & Affiliations

Zeila Zanolli1,*, Jacek C. Wojdeł2, Jorge Íñiguez2, and Philippe Ghosez1

  • 1Physique Théorique des Matériaux, Université de Liège, B-4000 Sart Tilman, Belgium
  • 2Institut de Ciencia de Materials de Barcelona (ICMAB–CSIC), Campus UAB, 08193 Bellaterra, Spain

  • *Present address: PGI and IAS, Forschungszentrum Jülich, D-52425 Jülich, Germany; zeilazanolli@gmail.com

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Issue

Vol. 88, Iss. 6 — 1 August 2013

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