RIXS study of spontaneously forming superstructures in the thiospinel CuIr2S4
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https://doi.esrf.fr/10.15151/ESRF-ES-1999196779
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资源简介：
The thiospinel CuIr2S4 is discussed as an outstanding example for the spontaneous formation of complex superstructures (octamers) below a metal-insulator transition. The mechanism is still controversial. Theories range from an itinerant picture of an orbitally induced Peierls transition, neglec¬ting spin-orbit coupling, to local models in which spin-orbit coupling and intersite Coulomb repulsion are decisive. In preliminary RIXS data, we found evidence for dimers in the metallic phase at 300 K, a very unexpected result. We propose a thorough RIXS study to clarify the origin of superstructures in this fascinating material, e.g. establishing whether the dimerisation is intrinsic or a remnant of the insulating phase.
提供机构：
University of Koeln, II. Physikalisches Institut, Zuelpicher Str. 77, 50937 Cologne, Germany; Politecnico di Milano, Dipartimento di Fisica, Piazza Leonardo da Vinci 32, 20133 Milano, Italy; Universita di Padova, Dipartimento di Fisica e Astronomia G Galilei, Via F Marzolo 8, 35131 Padova, Italy; ESRF, 71 avenue des Martyrs, CS 40220, 38043 Grenoble Cedex 9, France; University of Koeln, II. Physikalisches Institut, Zuelpicher Str. 77, 50937, Cologne, DE
创建时间：
2028-01-01
