CHANGES IN SCREENING AND ELECTRON-DENSITY ACROSS THE COUPLED METALLIC-MAGNETIC PHASE-TRANSITION OF LA1-XCAXMNO3

被引：36

作者：

MCILROY, D ^{[1
]}

ZHANG, J ^{[1
]}

LIOU, SH ^{[1
]}

DOWBEN, PA ^{[1
]}

机构：

[1] UNIV NEBRASKA, CTR MAT RES & DEV, LINCOLN, NE 68588 USA

来源：

PHYSICS LETTERS A | 1995年 / 207卷 / 06期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0375-9601(95)00672-P

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have observed the temperature dependence of the local electron screening across the nonmetal-metal transition of the transition metal oxide La0.65Ca0.35MnO3 using resonant photoemission spectroscopy. In addition, a measurable change in the density of states near the Fermi level as a function of temperature was also observed. These changes in screening and electronic structure across the transition correlate well with both the bulk resistivity and magnetization. Energy shifts of the valence bands indicated that the Mn 3d-O 2p hybridization and charge distribution changed across the transition, consistent with theoretical models.

引用

页码：367 / 373

页数：7

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