Publications Repository - Helmholtz-Zentrum Dresden-Rossendorf
1 PublicationPhonon Magnetochiral Effect
Nomura, T.; Zhang, X.-X.; Zherlitsyn, S.; Wosnitza, J.; Tokura, Y.; Nagaosa, N.; Seki, S.
Abstract
The magnetochiral effect (MCE) of phonons, a nonreciprocal acoustic propagation arising due to symmetry principles, is demonstrated in the chiral-lattice ferrimagnet Cu2OSeO3. Our high-resolution ultrasound experiments reveal that the sound velocity differs for parallel and antiparallel propagation with respect to the external magnetic field. The sign of the nonreciprocity depends on the chirality of the crystal in accordance with the selection rule of the MCE. The nonreciprocity is enhanced below the magnetic ordering temperature and at higher ultrasound frequencies, which is quantitatively explained by a proposed magnon-phonon hybridization mechanism.
Involved research facilities
- High Magnetic Field Laboratory (HLD)
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Physical Review Letters 122(2019), 145901
DOI: 10.1103/PhysRevLett.122.145901
Cited 63 times in Scopus
Downloads
- Open Access Version from arxiv.org
- Secondary publication expected
Permalink: https://www.hzdr.de/publications/Publ-29097
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