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Dynamic Jahn-Teller effect in the strong spin-orbit coupling regime

Author

Listed:
  • Ivica Živković

    (École Polytechnique Fédérale de Lausanne)

  • Jian-Rui Soh

    (École Polytechnique Fédérale de Lausanne)

  • Oleg Malanyuk

    (École Polytechnique Fédérale de Lausanne)

  • Ravi Yadav

    (École Polytechnique Fédérale de Lausanne)

  • Federico Pisani

    (École Polytechnique Fédérale de Lausanne)

  • Aria M. Tehrani

    (ETH Zurich)

  • Davor Tolj

    (École Polytechnique Fédérale de Lausanne)

  • Jana Pasztorova

    (École Polytechnique Fédérale de Lausanne)

  • Daigorou Hirai

    (Nagoya University)

  • Yuan Wei

    (Paul Scherrer Institute)

  • Wenliang Zhang

    (Paul Scherrer Institute)

  • Carlos Galdino

    (Paul Scherrer Institute)

  • Tianlun Yu

    (Paul Scherrer Institute)

  • Kenji Ishii

    (National Institutes for Quantum Science and Technology)

  • Albin Demuer

    (LNCMI)

  • Oleg V. Yazyev

    (École Polytechnique Fédérale de Lausanne)

  • Thorsten Schmitt

    (Paul Scherrer Institute)

  • Henrik M. Rønnow

    (École Polytechnique Fédérale de Lausanne)

Abstract

Exotic quantum phases, arising from a complex interplay of charge, spin, lattice and orbital degrees of freedom, are of immense interest to a wide research community. A well-known example of such an entangled behavior is the Jahn-Teller effect, where the lifting of orbital degeneracy proceeds through lattice distortions. Here we demonstrate that a highly-symmetrical 5d1 double perovskite Ba2MgReO6, comprising a 3D array of isolated ReO6 octahedra, represents a rare example of a dynamic Jahn-Teller system in the strong spin-orbit coupling regime. Thermodynamic and resonant inelastic x-ray scattering experiments, supported by quantum chemistry calculations, undoubtedly show that the Jahn-Teller instability leads to a ground-state doublet, resolving a long-standing puzzle in this family of compounds. The dynamic state of ReO6 octahedra persists down to the lowest temperatures, where a multipolar order sets in, allowing for investigations of the interplay between a dynamic JT effect and strongly correlated electron behavior.

Suggested Citation

  • Ivica Živković & Jian-Rui Soh & Oleg Malanyuk & Ravi Yadav & Federico Pisani & Aria M. Tehrani & Davor Tolj & Jana Pasztorova & Daigorou Hirai & Yuan Wei & Wenliang Zhang & Carlos Galdino & Tianlun Yu, 2024. "Dynamic Jahn-Teller effect in the strong spin-orbit coupling regime," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-52935-w
    DOI: 10.1038/s41467-024-52935-w
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    References listed on IDEAS

    as
    1. Min Li & Ming Zhang & Oriol Vendrell & Zhenning Guo & Qianru Zhu & Xiang Gao & Lushuai Cao & Keyu Guo & Qin-Qin Su & Wei Cao & Siqiang Luo & Jiaqing Yan & Yueming Zhou & Yunquan Liu & Zheng Li & Peixi, 2021. "Ultrafast imaging of spontaneous symmetry breaking in a photoionized molecular system," Nature Communications, Nature, vol. 12(1), pages 1-6, December.
    2. L. Lu & M. Song & W. Liu & A. P. Reyes & P. Kuhns & H. O. Lee & I. R. Fisher & V. F. Mitrović, 2017. "Magnetism and local symmetry breaking in a Mott insulator with strong spin orbit interactions," Nature Communications, Nature, vol. 8(1), pages 1-8, April.
    3. Gyöngyi Klupp & Péter Matus & Katalin Kamarás & Alexey Y. Ganin & Alec McLennan & Matthew J. Rosseinsky & Yasuhiro Takabayashi & Martin T. McDonald & Kosmas Prassides, 2012. "Dynamic Jahn–Teller effect in the parent insulating state of the molecular superconductor Cs3C60," Nature Communications, Nature, vol. 3(1), pages 1-6, January.
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