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arXiv · 0705.0336

Sr2CrOsO6: Endpoint of a spin polarized metal-insulator transition by 5d band filling

Y. Krockenberger·K. Mogare·M. Reehuis·M. Tovar·M. Jansen·G. Vaitheeswaran·V. Kanchana·F. Bultmark·A. Delin·F. Wilhelm·A. Rogalev·A. Winkler·L. Alff
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Abstract

In the search for new spintronic materials with high spin-polarization at room-temperature, we have synthesized an osmium based double perovskite with a Curie-temperature of 725 K. Our combined experimental results confirm the existence of a sizable induced magnetic moment at the Os site, supported by band-structure calculations in agreement with a proposed kinetic energy driven mechanism of ferrimagnetism in these compounds. The intriguing property of Sr2CrOsO6 is that it is at the endpoint of a metal-insulator transition due to 5d band filling, and at the same time ferrimagnetism and high-spin polarization is preserved.

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Y. Krockenberger, K. Mogare, M. Reehuis, M. Tovar, M. Jansen, G. Vaitheeswaran, V. Kanchana, F. Bultmark, A. Delin, F. Wilhelm, A. Rogalev, A. Winkler, L. Alff. 2007-05-02. Sr2CrOsO6: Endpoint of a spin polarized metal-insulator transition by 5d band filling. https://doi.org/10.1103/physrevb.75.179901

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