Electronic states of Sm4As3 and Sm4Bi3 studied with photoemission spectroscopy

被引：7

作者：

Suga, S

Sekiyama, A

Imada, S

Suzuki, T

Aoki, H

Ochiai, A

机构：

[1] Osaka Univ, Grad Sch Engn Sci, Dept Mat Phys, Toyonaka, Osaka 5608531, Japan

[2] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan

[3] Niigata Univ, Dept Mat Engn, Niigata 9502181, Japan

来源：

PHYSICA B | 2000年 / 281卷

关键词：

Kondo material; photoemission; MCD;

D O I：

10.1016/S0921-4526(99)01155-2

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Sm4As3 is a Kondo material with a ferromagnetic phase transition at T-c = 160 R. Sm4Bi3 is a valence fluctuation material with a charge ordering below 250 K. Their electronic structures are studied by X-ray photoemission (XPS) and high-resolution 4d-4f resonance photoemission spectroscopy. From the kinetic energy dependence of the spectra. the contribution of the surface component is estimated and the bulk electronic stairs are discussed. Core absorption magnetic circular dichroism (MCD) is measured for Sm4As3 below T-c. 2S(z) is found to be larger than L-z in Sm4As3. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：158 / 160

页数：3

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