Singular Continuous and Nonreciprocal Phonons in Quasicrystal AlPdMn.
| Autor: | Matsuura M; Neutron Science and Technology Center, Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki 319-1106, Japan., Zhang J; Institute of Industrial Science, The University of Tokyo, Tokyo, Japan., Kamimura Y; Institute of Industrial Science, The University of Tokyo, Tokyo, Japan., Kofu M; J-PARC Center, Japan Atomic Energy Agency, Tokai, Japan., Edagawa K; Institute of Industrial Science, The University of Tokyo, Tokyo, Japan. |
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| Jazyk: | angličtina |
| Zdroj: | Physical review letters [Phys Rev Lett] 2024 Sep 27; Vol. 133 (13), pp. 136101. |
| DOI: | 10.1103/PhysRevLett.133.136101 |
| Abstrakt: | In quasicrystals lacking translational symmetry but having highly ordered structures, understanding how phonons propagate in their aperiodic lattices remains an unsolved issue. We present an inelastic neutron scattering study on acoustic phonon modes of icosahedral quasicrystal AlPdMn, revealing hierarchical pseudo-gap structure in low-energy acoustic modes. Additionally, phonon intensities are asymmetric in energy and wave vectors with respect to the Bragg peak, indicating characteristic nonreciprocal phonon propagation in quasicrystals. |
| Databáze: | MEDLINE |
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