Half-metallic ferromagnetism and spin polarization in CrO2

被引：73
作者：
Chioncel, L. [1 ]
Allmaier, H.
Arrigoni, E.
Yamasaki, A.
Daghofer, M.
Katsnelson, M. I.
Lichtenstein, A. I.
机构：
[1] Univ Oradea, Dept Phys, Oradea 410087, Romania
[2] Graz Univ Technol, Inst Theoret Phys, A-8010 Graz, Austria
[3] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany
[4] Univ Nijmegen, NL-6525 ED Nijmegen, Netherlands
[5] Univ Hamburg, Inst Theoret Phys, DE-20355 Hamburg, Germany
来源：
PHYSICAL REVIEW B | 2007年 / 75卷 / 14期
关键词：
D O I：
10.1103/PhysRevB.75.140406
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present electronic structure calculations in combination with local and nonlocal many-body correlation effects for the half-metallic ferromagnet CrO2. Both zero temperature results from a variational cluster approach as well as finite-temperature dynamical mean field theory results support the existence of low-energy nonquasiparticle states, which turn out to be essential for a correct quantitative description of depolarization effects.
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页数：4
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