Itinerant Magnetic Multipole Moments of Rank Five as the Hidden Order in URu2Si2
2009 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 103, no 10, 107202- p.Article in journal (Refereed) Published
A broken symmetry ground state without any magnetic moments has been calculated by means of the local-density approximation to density functional theory plus a local exchange term, the so-called LDA+U approach, for URu2Si2. The solution is analyzed in terms of a multipole tensor expansion of the itinerant density matrix and is found to be a nontrivial magnetic multipole. Analysis and further calculations show that this type of multipole enters naturally in time reversal breaking in the presence of large effective spin-orbit coupling and coexists with magnetic moments for most magnetic actinides.
Place, publisher, year, edition, pages
2009. Vol. 103, no 10, 107202- p.
IdentifiersURN: urn:nbn:se:uu:diva-98061DOI: 10.1103/PhysRevLett.103.107202ISI: 000269639800053OAI: oai:DiVA.org:uu-98061DiVA: diva2:173230