OPTICAL-SPECTRA OF TITANIUM-OXIDE PEROVSKITES WITH VARYING NUMBER OF D-ELECTRONS

被引：27

作者：

FUJISHIMA, Y ^{[1
]}

TOKURA, Y ^{[1
]}

ARIMA, T ^{[1
]}

UCHIDA, S ^{[1
]}

机构：

[1] UNIV TOKYO,DEPT APPL PHYS,TOKYO 113,JAPAN

来源：

PHYSICA C | 1991年 / 185卷

关键词：

D O I：

10.1016/0921-4534(91)91724-I

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Optical spectra of Sr1-xLaxTiO3 have been investigated to unravel the change of electronic structures with varying the d-band filling parameter x (or Ti-valence, +4-x). In the small-x region (< 0.5), the apparent plasma frequency was observed to increase with x, supporting the simple picture of the d-band filling. As x further increases and approaches the end (x = 1), the deduced effective mass of d-electron was observed to be critically enhanced, indicating the increasing effect of electron correlation.

引用

页码：1001 / 1002

页数：2