CaCrO3: An Anomalous Antiferromagnetic Metallic Oxide

被引：88

作者：

Komarek, A. C. ^{[1
]}

Streltsov, S. V. ^{[2
]}

Isobe, M. ^{[3
]}

Moeller, T. ^{[1
]}

Hoelzel, M. ^{[4
,5
]}

Senyshyn, A. ^{[4
,5
]}

Trots, D. ^{[6
]}

Fernandez-Diaz, M. T. ^{[7
]}

Hansen, T. ^{[7
]}

Gotou, H. ^{[3
]}

Yagi, T. ^{[3
]}

Ueda, Y. ^{[3
]}

Anisimov, V. I. ^{[2
]}

Grueninger, M. ^{[1
]}

Khomskii, D. I. ^{[1
]}

Braden, M. ^{[1
]}

机构：

[1] Univ Cologne, Inst Phys 2, D-50937 Cologne, Germany

[2] Inst Met Phys, Ekaterinburg 620041, Russia

[3] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan

[4] Tech Univ Darmstadt, D-64287 Darmstadt, Germany

[5] Tech Univ Munich, FRM II, D-85747 Garching, Germany

[6] DESY, HASYLAB, D-22607 Hamburg, Germany

[7] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.101.167204

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Combining infrared reflectivity, transport, susceptibility, and several diffraction techniques, we find compelling evidence that CaCrO(3) is a rare case of a metallic and antiferromagnetic transition-metal oxide with a three-dimensional electronic structure. Local spin density approximation calculations correctly describe the metallic behavior as well as the anisotropic magnetic ordering pattern of C type: The high Cr valence state induces via sizable pd hybridization remarkably strong next-nearest-neighbor interactions stabilizing this ordering. The subtle balance of magnetic interactions gives rise to magnetoelastic coupling, explaining pronounced structural anomalies observed at the magnetic ordering transition.

引用

页数：4

共 29 条

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