2025/03/20 by Simpson, S., Dey, U., Sjökvist, R. J. +5
#FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci)
paper · doi:10.48550/arxiv.2503.16228
We discover a rare structural manifestation of the Goldstone paradigm in a hexagonal polytype of the archetypal ferroelectric BaTiO3. First-principles calculations confirm the Goldstone character of the order parameter, and high-resolution diffraction measurements link this to a quasi-continuous domain texture in the vicinity of the low-temperature phase transitions. Our findings highlight how changes in structural topology may be exploited to realize rich polar topologies in bulk ferroelectric perovskites.