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Theoretical studies of spectral properties of plutonium

  • Jian Xin Zhu
  • , A. K. McMahan
  • , M. D. Jones
  • , T. Durakiewicz
  • , J. J. Joyce
  • , J. M. Wills
  • , R. C. Albers

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

By combining the local density approximation (LDA) with dynamical mean field theory (DMFT), we report a systematic analysis of the spectral properties of 5-plutonium with varying 5/occupancy. The LDA Hamiltonian is extracted from a tight-binding (TB) fit to full-potential linearized augmented plane-wave (FP-LAPW) calculations. The DMFT equations are solved by the exact quantum Monte Carlo (QMC) method and the Hubbard-I approximation. We show the strong sensitivity of the spectral properties to the 5/ occupancy, which suggests using this occupancy as a fitting parameter in addition to the Hubbard U. By comparing with PES data, we conclude that the "open shell" 5f configuration gives the best agreement, resolving the controversy over 5/ "open shell" versus "close shell" atomic configurations in 5-Pu.

Original languageEnglish
Title of host publicationMaterials Research Society Symposium Proceedings - Actinides 2008- Basic Science, Applications and Technology
PublisherMaterials Research Society
Pages227-232
Number of pages6
ISBN (Print)9781605608655
DOIs
StatePublished - 2008
EventActinides 2008- Basic Science, Applications and Technology - San Francisco, CA, United States
Duration: Mar 24 2008Mar 28 2008

Publication series

NameMaterials Research Society Symposium Proceedings
Volume1104

Conference

ConferenceActinides 2008- Basic Science, Applications and Technology
Country/TerritoryUnited States
CitySan Francisco, CA
Period03/24/0803/28/08

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