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

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

2007-05-02

arxiv.org/abs/0705.0336v1

Phys. Rev. B 75, 020404(R) (2007)

Physics

Condensed Matter

Strongly Correlated Electrons

including corrected table 1

Scientific paper

10.1103/PhysRevB.75.179901

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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