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

被引：235
作者：
Krockenberger, Y.
Mogare, K.
Reehuis, M.
Tovar, M.
Jansen, M.
Vaitheeswaran, G.
Kanchana, V.
Bultmark, F.
Delin, A.
Wilhelm, F.
Rogalev, A.
Winkler, A.
Alff, L.
机构：
[1] Tech Univ Darmstadt, D-64287 Darmstadt, Germany
[2] Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany
[3] Hahn Meitner Inst Berlin GmbH, D-14109 Berlin, Germany
[4] Royal Inst Technol, Dept Mat Sci & Engn, Stockholm 10044, Sweden
[5] Uppsala Univ, Dept Phys, S-75121 Uppsala, Sweden
[6] European Synchrotron Radiat Facil, F-38043 Grenoble 9, France
来源：
PHYSICAL REVIEW B | 2007年 / 75卷 / 02期
关键词：
D O I：
10.1103/PhysRevB.75.020404
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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 end point of a metal-insulator transition due to 5d band filling and at the same time ferrimagnetism and high-spin polarization are preserved.
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