Metal-Insulator Transition in CuIr2S4: XAS Results on the Electronic Structure

Author

Mark C. Croft
Wolfgang A. Caliebe
Hyungje Woo
Trevor A. Tyson
D. Sills
Yew San Hor, Missouri University of Science and TechnologyFollow
Sangwook Cheong
Valery D. Kiryukhin
Sejung Oh

Abstract

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.

Recommended Citation

M. C. Croft et al., "Metal-Insulator Transition in CuIr2S4: XAS Results on the Electronic Structure," Physical Review B (Condensed Matter), vol. 67, no. 20, pp. 2011021 - 2011024, American Physical Society (APS), May 2003.

The definitive version is available at https://doi.org/10.1103/PhysRevB.67.201102

Department(s)

Physics

Keywords and Phrases

Copper Complex; Metal Complex; Electronics; Low Temperature; Measurement; Neutron Scattering; Radiation Absorption; Structure Analysis; X Ray

International Standard Serial Number (ISSN)

0163-1829

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2003 American Physical Society (APS), All rights reserved.

Publication Date

01 May 2003