Spectroscopic investigation on the electronic structure of a 5d band insulator SrHfO3 in proximity to ferroelectric instability: Comparison with SrTiO3 and SrZrO3

被引：30

作者：

Lee, D. J. ^{[1
]}

Seo, Y. K. ^{[1
]}

Lee, Y. S. ^{[1
]}

Noh, H. -J. ^{[2
]}

机构：

[1] Soongsil Univ, Dept Phys, Seoul 156743, South Korea

[2] Chonnam Natl Univ, Dept Phys, Kwangju 500757, South Korea

来源：

SOLID STATE COMMUNICATIONS | 2010年 / 150卷 / 5-6期

关键词：

SrHfO3; Electronic structure; Optical spectroscopy; x-ray absorption spectroscopy; 1ST-PRINCIPLES; OXIDES; ORIGIN;

D O I：

10.1016/j.ssc.2009.09.048

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We investigated the high-energy electronic structure of a 5d perovskite SrHfO3 by using optical spectroscopy and O 1s x-ray absorption spectroscopy. From the combined spectra the values of electronic structure parameters are estimated properly. in particular, the crystal field splitting energy, which is closely associated with the p-d hybridization strength, is as high as similar to 5 eV, and the Sr 4d bands appear to be strongly mixed with the Hf 5d bands. These findings are discussed in relation to a possible ferroelectric instability in SrHfO3, and are compared with electronic properties of similar compounds, 3d SrTiO3 and 4d SrZrO3. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：301 / 305

页数：5

共 20 条

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