High resolution photoemission study of Nd0.5Sr0.5MnO3: Temperature dependence and resonance spectra

被引：6

作者：

Suga, S

Matsushita, T

Tsunekawa, M

Iwasaki, T

Samejima, J

Kuwata, Y

Kimura, A

Sekiyama, A

Fujimori, A

Ishii, H

Miyahara, T

Kuwahara, H

Tokura, Y

机构：

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

[2] TOKYO METROPOLITAN UNIV,DEPT PHYS,TOKYO,JAPAN

[3] NATL LAB HIGH ENERGY PHYS,PHOTON FACTORY,TSUKUBA,IBARAKI 305,JAPAN

[4] JRCAT,TSUKUBA,IBARAKI,JAPAN

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

来源：

PHYSICA B | 1997年 / 237卷

关键词：

resonance photoemission; phase transition; ferromagnetism; charge ordering; photoemission spectroscopy;

D O I：

10.1016/S0921-4526(97)00099-9

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

High-resolution photoemission spectra are measured by changing the sample temperature from 290 K down to 11-15 K under the off- and on-resonance excitations for the Mn 2p, O 1s and Nd 3d states. Three Mn 3d-derived valence band features are clearly revealed in the on-resonance spectrum at room temperature for the Mn 2p core excitation. Among them, the step-like structure just below the Fermi level (E-F), which is thought to be the e(g) state, is suppressed at low temperatures. Observed energy shifts and spectral changes of the whole valence band upon changing the temperature are qualitatively discussed.

引用

页码：413 / 414

页数：2