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arXiv · 2401.17158

Chirality-Induced Selectivity of Phonon Angular Momenta in Chiral Quartz Crystals

Kazuki Ohe·Hiroaki Shishido·Masaki Kato·Shoyo Utsumi·Hiroyasu Matsuura·Yoshihiko Togawa
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Abstract

A generation, propagation, and transfer of phonon angular momenta are examined on thermal transport in chiral insulative and diamagnetic crystals of $\alpha$-quartz. We found that thermally-driven phonons carry chirality-dependent angular momenta in the quartz crystals and they could be extracted from the quartz as a spin signal. Namely, chirality-induced selectivity of phonon angular momenta is realized in the chiral quartz. We argue that chiral phonons available in chiral materials could be a key element in triggering or enhancing chirality-induced spin selectivity with robust spin polarization and long-range spin transport found in various chiral materials.

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Kazuki Ohe, Hiroaki Shishido, Masaki Kato, Shoyo Utsumi, Hiroyasu Matsuura, Yoshihiko Togawa. 2024-01-30. Chirality-Induced Selectivity of Phonon Angular Momenta in Chiral Quartz Crystals. https://doi.org/10.1103/physrevlett.132.056302

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