Orbital orders under magnetic fields in cubic PrIr₂Zn₂₀

2025/04/14 by Okanoya, Hitoko, Hattori, Kazumasa · 1 citation
#FOS: Physical sciences #Strongly Correlated Electrons (cond-mat.str-el)

paper · doi:10.48550/arxiv.2504.10216

Abstract

We study orbital orders in quadrupolar heavy-fermion compound PrIr₂Zn₂₀ under magnetic fields on the basis of the Landau theory. Assuming E_g orbital (electric quadrupolar) orders in the cubic symmetry with the ordering wavenumber at the L points in the face-centered cubic lattice Brillouin zone as observed experimentally, we construct the Landau free energy and analyze it. We find that the unidentified high-temperature ordered phase under the magnetic field H ||[001] reported earlier can be interpreted as the consequence of the internal rotation in the orbital moments of f electrons at the Pr site. We discuss the phase diagram for various magnetic-field directions and also possible double-q quadrupolar orders in this system.

Cited by

• Probing magnetic-field-induced multipolar ordering through field-angle-resolved magnetostriction and thermal expansion in PrIr₂Zn₂₀

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