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arXiv · 1710.01676

Tailoring the electronic properties of Ca$_2$RuO$_4$ via epitaxial strain

C. Dietl·S. K. Sinha·G. Christiani·Y. Khaydukov·T. Keller·D. Putzky·S. Ibrahimkutty·P. Wochner·G. Logvenov·P. A. van Aken·B. J. Kim·B. Keimer
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Abstract

We report the synthesis of Ca$_2$RuO$_4$ thin films on NdCaAlO$_{4}$ (110), LaAlO$_3$ (100) and LaSrAlO$_4$ (001) substrates and show that epitaxial strain induces a transition from the Mott-insulating phase of bulk Ca$_2$RuO$_4$ into a metallic phase. Magnetometry and spin-polarized neutron reflectometry reveal a low-temperature, small-moment ferromagnetic state in metallic Ca$_2$RuO$_4$ films.

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C. Dietl, S. K. Sinha, G. Christiani, Y. Khaydukov, T. Keller, D. Putzky, S. Ibrahimkutty, P. Wochner, G. Logvenov, P. A. van Aken, B. J. Kim, B. Keimer. 2017-10-04. Tailoring the electronic properties of Ca$_2$RuO$_4$ via epitaxial strain. https://doi.org/10.1063/1.5007680

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