Charge-ordering and spin-dimerization transition in CuIr2 S4: Lattice dynamics confirms octamer correlations

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Autorschaft

  • V. Gnezdilov
  • A. Glamazda
  • V. Tsurkan
  • P. Lemmens

Externe Organisationen

  • B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine
  • Technische Universität Braunschweig
  • Kharkov National University
  • Universität Augsburg
  • Moldova State University
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Aufsatznummer095002
FachzeitschriftPhysical Review Materials
Jahrgang8
Ausgabenummer9
PublikationsstatusVeröffentlicht - 20 Sept. 2024
Extern publiziertJa

Abstract

In the spinel CuIr2S4 an exotic, orbitally driven metal-insulator (MI) transition is observed at TMI∼230K. However, spectroscopic investigations presently do not agree with respect to the role of related lattice distortions and dynamic effects. Here, we present a detailed study of single-crystalline CuIr2S4 from different batches comparing detailed high- and low-temperature phonon spectra. An analysis using dynamic lattice calculations confirms a low-temperature collectively distorted structure according to previous synchrotron x-ray studies. The related isomorphic Ir3+ and Ir4+ octamers' formation and spin dimerization agree well with the proposed P1¯ symmetry. Thereby, previous discrepancies are resolved.

ASJC Scopus Sachgebiete

Zitieren

Charge-ordering and spin-dimerization transition in CuIr2 S4: Lattice dynamics confirms octamer correlations. / Gnezdilov, V.; Glamazda, A.; Tsurkan, V. et al.
in: Physical Review Materials, Jahrgang 8, Nr. 9, 095002, 20.09.2024.

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Gnezdilov, V, Glamazda, A, Tsurkan, V & Lemmens, P 2024, 'Charge-ordering and spin-dimerization transition in CuIr2 S4: Lattice dynamics confirms octamer correlations', Physical Review Materials, Jg. 8, Nr. 9, 095002. https://doi.org/10.1103/physrevmaterials.8.095002
Gnezdilov, V., Glamazda, A., Tsurkan, V., & Lemmens, P. (2024). Charge-ordering and spin-dimerization transition in CuIr2 S4: Lattice dynamics confirms octamer correlations. Physical Review Materials, 8(9), Artikel 095002. https://doi.org/10.1103/physrevmaterials.8.095002
Gnezdilov V, Glamazda A, Tsurkan V, Lemmens P. Charge-ordering and spin-dimerization transition in CuIr2 S4: Lattice dynamics confirms octamer correlations. Physical Review Materials. 2024 Sep 20;8(9):095002. doi: 10.1103/physrevmaterials.8.095002
Gnezdilov, V. ; Glamazda, A. ; Tsurkan, V. et al. / Charge-ordering and spin-dimerization transition in CuIr2 S4 : Lattice dynamics confirms octamer correlations. in: Physical Review Materials. 2024 ; Jahrgang 8, Nr. 9.
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