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Dual nature of the 5f electrons in plutonium materials
Vise andre og tillknytning
2006 (engelsk)Inngår i: Physica. B, Condensed matter, ISSN 0921-4526, E-ISSN 1873-2135, Vol. 378-80, s. 920-924Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The electronic structure of select Pu materials is examined by means of photoemission (PES) and model calculations. We present the first photoemission results and electronic structure calculations for the material PuIn3. Results for Pu materials, including the cubic delta-phase metal and the superconductor PuCoGa5, give indication of the 5f electrons exhibiting both localized and itinerant character. These new results for PuIn3 place this compounds also in the 5f dual nature category. The dual nature of the Pu 5f electrons demarks the boundary between localized and itinerant 5f character in the actinides. The photoemission data for delta-Pu, PuIn3 and PuCoGa5 are compared against model calculations. The calculations are a mixed level model (MLM) which is a multi-electron extension of the generalized gradient approximation. Using the MLM, one obtains good agreement for the volume and total energy minimum with 4 of 5 Pu 5f electrons localized. The calculations also agree well with the PES spectra. Other computational schemes and interpretations are also reviewed.

sted, utgiver, år, opplag, sider
2006. Vol. 378-80, s. 920-924
Emneord [en]
photoemission, dual nature, electronic structure, plutonium, delta-plutonium, photoelectron-spectroscopy, pu, photoemission, superconductivity, pucoga5, configuration, localization, layers
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Identifikatorer
URN: urn:nbn:se:kth:diva-15759DOI: 10.1016/j.physb.2006.01.493ISI: 000238426600400Scopus ID: 2-s2.0-33747633415OAI: oai:DiVA.org:kth-15759DiVA, id: diva2:333801
Merknad
QC 20100525 QC 20111004. Conference: International Conference on Strongly Correlated Electron Systems (SCES 05). Vienna, AUSTRIA. JUL 26-30, 2005Tilgjengelig fra: 2010-08-05 Laget: 2010-08-05 Sist oppdatert: 2017-12-12bibliografisk kontrollert

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