Abstract
Inelastic neutron scattering measurements are performed to investigate the dynamic structure of liquid Se, Te, and Te50Se50. The bond‐stretching modes for liquid Se and Te50Se50 (both are in the semiconducting phase) are clearly observed at higher‐energy regions than that for their trigonal phase. This shift is a reflection of their pronounced molecular‐like properties without prominent inter‐molecular interactions, whereas the vibrational modes for liquid Te (in the metallic phase) show its metallic‐like bonding character with remarkable inter‐molecular interactions. We thus observed a change in dynamic structure that accompanies the semiconductor‐to‐metal transition; the change that would be related to the slow dynamics induced by the transition.
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