Direct observation of t2g orbital ordering in magnetite

被引：79

作者：

Schlappa, J. ^{[1
]}

Schuessler-Langeheine, C. ^{[1
]}

Chang, C. F. ^{[1
]}

Ott, H. ^{[1
]}

Tanaka, A. ^{[2
]}

Hu, Z. ^{[1
]}

Haverkort, M. W. ^{[1
]}

Schierle, E. ^{[3
]}

Weschke, E. ^{[3
]}

Kaindl, G. ^{[3
]}

Tjeng, L. H. ^{[1
]}

机构：

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

[2] Hiroshima Univ, ADSM, Dept Quantum Matter, Higashihiroshima 7398530, Japan

[3] Free Univ Berlin, Inst Expt Phys, D-14195 Berlin, Germany

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.100.026406

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using soft-x-ray diffraction at the site-specific resonances in the Fe L(2,3) edge, we find clear evidence for orbital and charge ordering in magnetite below the Verwey transition. The spectra show directly that the (001/2) diffraction peak (in cubic notation) is caused by t(2g) orbital ordering at octahedral Fe(2+) sites and the (001) by a spatial modulation of the t(2g) occupation.

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页数：4

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