Many-body electronic structure of Americium metal

被引：97
|
作者：
Savrasov, SY [1 ]
Haule, K
Kotliar, G
机构：
[1] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA
[2] Rutgers State Univ, Dept Phys, Piscataway, NJ 08854 USA
[3] Rutgers State Univ, Ctr Mat Theory, Piscataway, NJ 08854 USA
来源：
PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 03期
关键词：
D O I：
10.1103/PhysRevLett.96.036404
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report computer based simulations of energetics, spectroscopy, and electron-phonon interaction of americium using a novel spectral density functional method. This approach gives rise to a new concept of a many-body electronic structure and reveals the unexpected mixed valence regime of Am 5f(6) electrons which under pressure acquire the 5f(7) valence state. This explains the unique properties of Am and addresses the fundamental issue of how the localization delocalization edge is approached from the localized side in a closed shell system.
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页数：4
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