Momentum Distribution and Renormalization Factor in Sodium and the Electron Gas

被引：67

作者：

Huotari, Simo ^{[1
,2
]}

Soininen, J. Aleksi ^{[2
]}

Pylkkanen, Tuomas ^{[1
,2
]}

Hamalainen, Keijo ^{[2
]}

Issolah, Arezki ^{[3
]}

Titov, Andrey ^{[4
,5
]}

McMinis, Jeremy ^{[6
,7
]}

Kim, Jeongnim ^{[6
,7
]}

Esler, Ken ^{[6
,7
]}

Ceperley, David M. ^{[6
,7
]}

Holzmann, Markus ^{[8
,9
]}

Olevano, Valerio ^{[4
,5
]}

机构：

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

[2] Univ Helsinki, Dept Phys, FI-00014 Helsinki, Finland

[3] Univ Tizi Ouzou, Tizi Ouzou 15000, Algeria

[4] UJF, F-38042 Grenoble, France

[5] CNRS, Inst Neel, F-38042 Grenoble, France

[6] Univ Illinois, Dept Phys, Champaign, IL 61801 USA

[7] Univ Illinois, NCSA, Champaign, IL 61801 USA

[8] UJF CNRS, LPMMC, F-38042 Grenoble, France

[9] UPMC CNRS, LPTMC, Paris, France

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 08期

基金：

芬兰科学院;

关键词：

COMPTON-SCATTERING; METALLIC DENSITIES; CORE ELECTRONS; PROFILES;

D O I：

10.1103/PhysRevLett.105.086403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present experimental and theoretical results on the momentum distribution and the quasiparticle renormalization factor in sodium. From an x-ray Compton-profile measurement of the valence-electron-momentum density, we derive its discontinuity at the Fermi wave vector. This yields an accurate measure of the renormalization factor that we compare with quantum Monte Carlo and G(0)W(0) calculations performed both on crystalline sodium and on the homogeneous electron gas.

引用

页数：4

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