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cond-mat.mtrl-sci2025
Optical phonons as a testing ground for spin group symmetries
F. Schilberth, M. Kondákor, D. Ukolov +12
Lattice vibrations are highly sensitive to crystal symmetries and their changes across phase transitions. The latter can modify irreducible (co)representations and corresponding in…
cond-mat.mtrl-sci2024
Terahertz resonant emission by optically excited infrared-active shear phonons in KY(MoO4)2
D. Kamenskyi, K. Vasin, L. Prodan +4
Generation of the monochromatic electromagnetic radiation in the terahertz (THz) range of frequencies for many decades remanes a chellenging task. Here we demonstrate the emission…