Jahn-Teller effect in spinel manganites probed by soft x-ray absorption spectroscopy

被引：32

作者：

Noh, HJ ^{[1
]}

Yeo, S

Kang, JS

Zhang, CL

Cheong, SW

Oh, SJ

Johnson, PD

机构：

[1] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA

[2] Rutgers State Univ, Ctr Emergent Mat, Piscataway, NJ 08854 USA

[3] Seoul Natl Univ, Ctr Strongly Correlated Mat Res, Seoul 151742, South Korea

[4] Seoul Natl Univ, Sch Phys, Seoul 151742, South Korea

[5] Catholic Univ Korea, Dept Phys, Puchon 420743, South Korea

[6] Seoul Natl Univ, CSCMR, Seoul 151742, South Korea

[7] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA

来源：

APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 08期

关键词：

D O I：

10.1063/1.2178474

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present soft x-ray absorption spectroscopy (XAS) on spinel manganites and show it can be used as a powerful tool to directly probe the Jahn-Teller (JT) splitting energy in transition metal oxides. The Mn L-2,L-3-edge XAS spectra of the spinel ZnMnxGa2-xO4 (x=0.5,1.0,1.4, and 2.0) and AMn(2)O(4) (A=Mg and Cd) change very systematically with the structural distortion of JT active octahedral sublattices. The XAS spectra are well reproduced by the configuration interaction cluster model including full ionic multiplet structure, and the spectral evolution is explained by JT energy splitting due to the elongation of the MnO6 octahedra in the model. In the O K-edge XAS spectra, the JT distortion produces a weak effect, less distinctive than in L-2,L-3-edge spectra. (c) 2006 American Institute of Physics.

引用

页数：3

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