pith. sign in

arxiv: 2104.01969 · v1 · pith:FI77IFNInew · submitted 2021-04-05 · ❄️ cond-mat.mtrl-sci · cond-mat.other

Glasslike phonon excitation caused by ferroelectric structural instability

Y. Ishii , A. Yamamoto , N. Sato , Y. Nambu , S. Ohira-Kawamura , N. Murai , T. Mori , S. Mori This is my paper
classification ❄️ cond-mat.mtrl-sci cond-mat.other
keywords excitationphasephononferroelectricglasslikeinstabilitystructuralacoustic
0
0 comments X
read the original abstract

Quest for new states of matter near an ordered phase is a promising route for making modern physics forward. By probing thermal properties of a ferroelectric (FE) crystal Ba1-xSrxAl2O4, we have clarified that low-energy excitation of acoustic phonons is remarkably enhanced with critical behavior at the border of the FE phase. The phonon spectrum is significantly damped toward the FE phase boundary and transforms into glasslike phonon excitation which is reminiscent of a boson peak. This system thus links long-standing issues of amorphous solids and structural instability in crystals to pave the way to controlling lattice fluctuation as a new tuning parameter.

This paper has not been read by Pith yet.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.

Forward citations

Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Glass-like anomalies and unconventional thermoelectric transport in chimney ladder crystals

    cond-mat.mtrl-sci 2025-03 unverdicted novelty 5.0

    NCL crystals exhibit boson-peak-like glassy anomalies from low-energy optical phonons and anomalous linear-T resistivity explained by electron scattering off overdamped phonons.