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Ferromagnetism and metal-like transport in antiferromagnetic insulator heterostructures

P. Padhan·P. Murugavel·W. Prellier
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Abstract

Strained Pr$_{0.5}$Ca$_{0.5}$MnO$_3$/La$_{0.5}$Ca$_{0.5}$MnO$_3$/Pr$_{0.5}$Ca$_{0.5}$MnO $_3$ trilayers were grown on (001)-SrTiO$_3$ 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 La$_{0.5}$Ca$_{0.5}$MnO$_3$ 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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P. Padhan, P. Murugavel, W. Prellier. 2005-06-15. Ferromagnetism and metal-like transport in antiferromagnetic insulator heterostructures. https://doi.org/10.1063/1.1992657

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