Physical Review Letters
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Pseudochiral Phonons from Octupolar Magnetic Order
Author(s): Ruairidh Sutcliffe, Kathleen Hart, Swati Chaudhary, and Arun Paramekanti
Motivated by the recent discovery of anomalously large magnetic response of chiral phonons in dipolar magnets, we introduce the concept of pseudochiral phonons which are shown to emerge in multipolar magnets. We consider Raman active quantum phonons, such as doublet ${E}_{g}$ phonons $({d}_{{x}^{2}−… [Phys. Rev. Lett. 137, 036703] Published Tue Jul 14, 2026