Quasielastic Neutron Scattering of Liquid Te50Se50 in the Semiconductor-to-Metal Transition Range

Ayano Chiba, Yoshinori Ohmasa, Makoto Yao, Oleg Petrenko, Yukinobu Kawakita

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9 Citations (Scopus)

Abstract

We have carried out neutron scattering experiments for liquid Te 50Se50 at 700K (semiconducting regime), 900K (transition regime) and 1100K (metallic regime). The quasielastic scattering peak is comparatively narrow at the peak positions of S(Q). A remarkable increase in the peak width is observed near the first minimum of S(Q), when the semiconductor-to-metal transition occurs. Since the first peak of S(Q) in this system proves to mainly reflect the inter-chain correlation and the second peak to the intra-chain correlation, the observed broadening may suggest frequent bond-switching between the chains in the metallic regime.

Original languageEnglish
Pages (from-to)504-508
Number of pages5
JournalJournal of the Physical Society of Japan
Volume71
Issue number2
DOIs
Publication statusPublished - 2002 Feb
Externally publishedYes

Keywords

  • Dynamic structure
  • Interchain correlation
  • Liquid
  • Neutron scattering
  • Selenium
  • Semiconductor-to-metal transition
  • Tellurium

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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