Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2007-01-16
Physics
Condensed Matter
Strongly Correlated Electrons
Accepted for publication in Philosophical Magazine Letters (Special issue on multiferroics)
Scientific paper
10.1080/09500830701210011
We report on the exchange bias between antiferromagnetic and ferroelectric hexagonal YMnO3 epitaxial thin films sandwiched between a metallic electrode (Pt) and a soft ferromagnetic layer (Py). Anisotropic magnetoresistance measurements are performed to monitor the presence of an exchange bias field. When the heteroestructure is biased by an electric field, it turns out that the exchange bias field is suppressed. We discuss the dependence of the observed effect on the amplitude and polarity of the electric field. Particular attention is devoted to the role of current leakage across the ferroelectric layer.
Bobo Jean-Francois
Ferrater C.
Fontcuberta Josep
Garcia-Cuenca M. V.
Hrabovsky D.
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