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arXiv · 2604.01013

Observation of acoustic magneto-chiral anisotropy in $\alpha$-quartz

M. Altangerel·S. Badoux·C. Proust·D. Vignolles·G. L. J. A. Rikken
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Abstract

We report the experimental observation of magneto-chiral anisotropy in the longitudinal and transverse ultrasound propagation in $\alpha$-quartz. To perform such measurement, we have built an ultrasound spectrometer with unprecedented experimental resolution of the order of $\Delta v/v \sim 10^{-8}$. We present a simple macroscopic Becquerel-like analytical model that accounts for the magnitude of the observed effect and its frequency dependence.

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M. Altangerel, S. Badoux, C. Proust, D. Vignolles, G. L. J. A. Rikken. 2026-04-01. Observation of acoustic magneto-chiral anisotropy in $\alpha$-quartz. https://doi.org/10.1103/7vmb-ytfd

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