Dynamic structure of liquid Se, Te and Se-Te mixtures by neutron scattering measurements

Ayano Chiba, Makoto Yao, Yoshinori Ohmasa, Jon Taylor, Stephen M. Bennington

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.

Original languageEnglish
Title of host publicationSlow Dynamics in Complex Systems
Subtitle of host publication3rd International Symposium on Slow Dynamics in Complex Systems
EditorsMichio Tokuyama, Irwin Oppenheim
PublisherAmerican Institute of Physics Inc.
Pages436-437
Number of pages2
ISBN (Electronic)0735401837
DOIs
Publication statusPublished - 2004 Apr 30
Externally publishedYes
Event3rd International Symposium on Slow Dynamics in Complex Systems - Sendai, Japan
Duration: 2003 Nov 32003 Nov 8

Publication series

NameAIP Conference Proceedings
Volume708
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other3rd International Symposium on Slow Dynamics in Complex Systems
CountryJapan
CitySendai
Period03/11/303/11/8

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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