Year: 2010
Type: article
Abstract: 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 G0W0 calculations performed both on crystalline sodium and on the homogeneous electron gas.
Source: Physical Review Letters
Institutions: University of Helsinki, European Synchrotron Radiation Facility, Mouloud Mammeri University of Tizi-Ouzou, Centre National de la Recherche Scientifique, Université Joseph Fourier, Institut Néel, University of Illinois Urbana-Champaign, National Center for Supercomputing Applications, Laboratoire de Physique et Modélisation des Milieux Condensés, Université Pierre-et-Marie-Curie
Language: English
Subfield: Metals and Alloys
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1971017902