Magnetoelectric Effects in Complex Oxides with Competing Ground States

Authors

  • Hajo J. A. Molegraaf,

    1. DPMC, University of Geneva, 24 Quai Ernest Ansermet 1211 Geneva 4 (Switzerland)
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  • Jason Hoffman,

    1. Department of Applied Physics Yale University New Haven, CT 06520 (USA)
    2. Center for Research on Interface Structures and Phenomena (CRISP) Yale University New Haven, CT 06520 (USA)
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  • Carlos A. F. Vaz,

    Corresponding author
    1. Becton Center Yale University P.O. Box 208284, New Haven, CT 06520-8284 (USA)
    2. Department of Applied Physics Yale University New Haven, CT 06520 (USA)
    3. Center for Research on Interface Structures and Phenomena (CRISP) Yale University New Haven, CT 06520 (USA)
    • Becton Center Yale University P.O. Box 208284, New Haven, CT 06520-8284 (USA).
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  • Stefano Gariglio,

    1. DPMC, University of Geneva, 24 Quai Ernest Ansermet 1211 Geneva 4 (Switzerland)
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  • Dirk van der Marel,

    1. DPMC, University of Geneva, 24 Quai Ernest Ansermet 1211 Geneva 4 (Switzerland)
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  • Charles H. Ahn,

    1. Department of Applied Physics Yale University New Haven, CT 06520 (USA)
    2. Center for Research on Interface Structures and Phenomena (CRISP) Yale University New Haven, CT 06520 (USA)
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  • Jean-Marc Triscone

    1. DPMC, University of Geneva, 24 Quai Ernest Ansermet 1211 Geneva 4 (Switzerland)
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Abstract

original image

Direct, charge-mediated magnetoelectric coupling is demonstrated in a heterogeneous multiferroic that takes advantage of the sensitivity of a strongly correlated magnetic system to competing electronic ground states. Using magneto-optic Kerr effect magnetometry, we observe large magnetoelectric coupling in ferroelectric/lanthanum manganite heterostructures, resulting in control of the magnetic state by means of an applied electric field, as illustrated in the figure.

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