5f-electron localization in PuSe and PuSb

被引：70

作者：

Gouder, T

Wastin, F

Rebizant, J

Havela, L

机构：

[1] Commiss European Communities, Joint Res Ctr, Inst Transuranium Elements, D-76175 Karlsruhe, Germany

[2] Charles Univ Prague, Dept Elect Struct, CZ-12116 Prague 2, Czech Republic

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.84.3378

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Thin layers of PuSb and PuSe were studied by photoelectron spectroscopy. X-ray photoelectron spectroscopy and high-resolution valence-band ultraviolet photoelectron spectroscopy spectra show localization of the 5f states and a low density of states at EF in PuSb. In PuSe, which can be classified as a heavy fermion system with low carrier density, we observed three narrow peaks in the valence band, which can be related to the 5f emission. These three features are very sensitive to stoichiometry deviations and disappear for PuSe prepared at T = 77 K.

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页码：3378 / 3381

页数：4

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