Metal-Insulator Transition in CuIr2S4: XAS Results on the Electronic Structure
S K and Ir L3 x-ray absorption measurements across the temperature-induced metal (M) to insulator (I) transition in Culr2S4 are presented. Dramatic S K-edge changes reflect the Ir d-electronic state redistribution across this transition. These changes, along with a detailed consideration of the I-phase structure, motivate a model in which the I-phase stabilization involves an interplay of charge and d-orbital orientation ordering along Ir chains, a quadrupling of the Ir-chain repeat unit, and correlated dimer spin-singlet formation.
M. C. Croft et al., "Metal-Insulator Transition in CuIr2S4: XAS Results on the Electronic Structure," Physical Review B - Condensed Matter and Materials Physics, vol. 67, no. 20, pp. 2011021-2011024, American Physical Society (APS), May 2003.
The definitive version is available at http://dx.doi.org/10.1103/PhysRevB.67.201102
Keywords and Phrases
Copper Complex; Metal Complex; Electronics; Low Temperature; Measurement; Neutron Scattering; Radiation Absorption; Structure Analysis; X Ray
International Standard Serial Number (ISSN)
Article - Journal
© 2003 American Physical Society (APS), All rights reserved.