Exchange energy dominated by large orbital spin-currents in δ-Pu
2008 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 78, no 10, 100404- p.Article in journal (Refereed) Published
The electronic structure of the anomalous delta phase of Pu is analyzed by a general and exact reformulation of the exchange energy of the f shell. It is found that the dominating contribution to the exchange energy is a polarization of orbital spin-currents that preserves the time-reversal symmetry; hence a nonmagnetic solution in accordance with experiments. The analysis brings a unifying picture of the role of exchange in the 5f shell with its relatively strong spin-orbit coupling. The results are in good accordance with recent measurements of the branching ratio for the d to f transition in the actinides.
Place, publisher, year, edition, pages
2008. Vol. 78, no 10, 100404- p.
IdentifiersURN: urn:nbn:se:uu:diva-98060DOI: 10.1103/PhysRevB.78.100404ISI: 000259690400008OAI: oai:DiVA.org:uu-98060DiVA: diva2:173229