2014/03/25 by Steven Disseler, Steven M. Disseler · 2 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Nuclear materials and radiation effects #Topological Materials and Phenomena #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.89.140413
published as Phys. Rev. B 89, 140413(R) 2014 · 5 pages, 4 figures
arxiv created 2014/03/25 · openalex publication_date 2014/04/28 · arxiv updated 2014/06/23 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
In the pyrochlore iridates R2Ir2O7 (R = lanthanide, Y) determination of the magnetic structure of the iridium moments remains an outstanding problem despite the role this is expected to play in the formation of novel band structures and topologies in these materials. In this work, an analysis of the experimentally measured spontaneous muon spin precession frequency is presented which incorporates both probabilistic and ab initio modeling techniques to determine the ground state magnetic structure. It is shown that the experimentally observed results are consistent only with a magnetically ordered Ir4+ sublattice with the so-called ``all-in/all-out'' magnetic structure, and that the electronic state of the Ir4+ is best described by the Jeff=(1)/(2) model in several member compounds. Through this approach it is also demonstrated that such a simple structure is not likely to be present on the rare-earth sublattice which contains much larger localized moments.