Unveiling Hidden Orders: Magnetostriction as a Probe of Multipolar-Ordered States

ORAL

Abstract

Symmetry broken phases involving higher order multipolar degrees of freedom are historically referred to as so-called “hidden orders”, due to the formidable task of detecting them with conventional probes. In this talk, we theoretically propose a novel and powerful means to directly probe higher-order symmetry breaking: magnetostriction. To that end, we focus on the family of Pr-based cage compounds with strongly correlated f-electrons, Pr(Ti,V,Ir)2(Al,Zn)20, whose low energy degrees of freedom are composed of purely higher-order multipoles. Employing a symmetry-constructed Landau theory of multipolar moments, we provide key scaling behaviours of the magnetostriction in a range of temperature regimes. These findings provide a way to have clear access to higher order multipolar moments.

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Presenters

  • Adarsh S Patri

    • Department of Physics and Centre for Quantum Materials, University of Toronto

Authors

  • Adarsh S Patri

    • Department of Physics and Centre for Quantum Materials, University of Toronto

  • Akito Sakai

    • University of Tokyo, Institute for Solid State Physics
    • ISSP, University of Tokyo

  • SungBin Lee

    • Department of Physics, Korea Advanced Institute of Science and Technology
    • Physics, KAIST
    • Korea Adv Inst of Sci & Tech
    • KAIST

  • Arun Paramekanti

    • Department of Physics, University of Toronto
    • University of Toronto
    • Department of Physics and Centre for Quantum Materials, University of Toronto

  • Satoru Nakatsuji

    • University of Tokyo, Institute for Solid State Physics
    • Advanced Materials Science, The University of Tokyo
    • University of Tokyo
    • ISSP, U Tokyo
    • U Tokyo, ISSP
    • ISSP, University of Tokyo

  • Yong-Baek Kim

    • Department of Physics, University of Toronto
    • Department of Physics and Centre for Quantum Materials, University of Toronto
    • Physics, University of Toronto