Ferromagnetism and metal-like transport in antiferromagnetic insulator heterostructures
Padhan, P. · Murugavel, P. · Prellier, W.
Original · EN
Strained Pr₀.₅Ca₀.₅MnO₃/La₀.₅Ca₀.₅MnO₃/Pr₀.₅Ca₀.₅MnO ₃ trilayers were grown on (001)-SrTiO₃ substrates using the pulsed-laser deposition technique. The coupling at the interfaces of several trilayers has been investigated from magnetization and electronic transport experiments. An increase of La₀.₅Ca₀.₅MnO₃ layer thickness induces a magnetic ordering in the strain layers and at the interfaces leading to ferromagnetic behavior and enhanced coercivity, while resistivity shows metal-like behaviors. These effects are not observed in the parent compounds, which are antiferromagnetic insulators, opening a path, to induce artificially some novel properties.
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