Bulk-sensitive photoemission spectroscopy for heavy-fermion Pr compounds using hard x-ray

被引：10

作者：

Yamasaki, A ^{[1
]}

Imada, S

Sekiyama, A

Tsunekawa, M

Dallera, C

Braicovich, L

Lee, TL

Sugawara, H

Sato, H

Settai, R

Önuki, Y

Suga, S

机构：

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

[2] Politecn Milan, Dipartimento Fis, INFM, I-20133 Milan, Italy

[3] European Synchrotron Radiat Facil, F-38043 Grenoble, France

[4] Tokyo Metropolitan Univ, Grad Sch Sci, Tokyo 1920397, Japan

[5] Osaka Univ, Grad Sch Sci, Toyonaka, Osaka 5600043, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2005年 / 74卷 / 07期

关键词：

hard x-ray; photoemission spectroscopy; bulk sensitive; Pr compounds; heavy fermions;

D O I：

10.1143/JPSJ.74.2045

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Bulk-sensitive photoemission spectroscopy using hard x-ray up to h nu = 5450 eV has been performed for heavy-fermion Pr compounds. A significant spectral intensity of the |3(9)4f(3)> final state was observed in Pr 3d core-level spectra of PrFe4P12 at both h nu = 2450 and 5450 eV. The spectra obtained by the configuration-interaction cluster model calculation reproduce the experimental spectra for well-hybridized PrFe4P1, and localized Pr metal. Results of the calculations suggest that the Kondo behavior observed in PrFe4P12 arise from the mixing of the |4f(2)> and |4f(3)> configurations due to the c-f hybridization. Whereas a contribution possibly from a disordered surface to the spectrum can be the fractured PrFe4P12, they cannot be disregarded for the scraped PrSn3 and Pr metal even negligible for the in the high-energy x-ray region.

引用

页码：2045 / 2051

页数：7