Dynamic Structure of Liquid Chalcogens in the Semiconductor-to-Metal Transition Range

Article type: Research Article

Authors: Chiba, Ayano | Yao, Makoto | Ohmasa, Yoshinori | Hiejima, Yusuke | Kawakita, Yukinobu | Bennington, Stephen M.

Affiliations: Department of Physics, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan | Department of Physics, Faculty of Sciences, Kyushu University, Fukuoka 810-8560, Japan | ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 OQX, UK

Note: [] Corresponding author. Tel.: +81-75-753-3780. Fax: +81-75-753-3780. E-mail: ayano@scphys.kyoto-u.ac.jp

Abstract: Dynamic structures of liquid Te70Se30 and Te50Se50 were investigated by inelastic neutron scattering experiments in the semiconductor-to-metal transition range. The bond-stretching modes for the both liquid mixtures were found to clearly soften when the transition occurs. We discuss the change of static and dynamic structures that accompany the transition.

Keywords: Liquid chalcogens, Selenium, Tellurium, Semiconductor-to-metal transition, Inelastic neutron scattering, Vibrational modes

DOI: 10.1080/10238160412331299988

Journal: Journal of Neutron Research, vol. 13, no. 1-3, pp. 149-152, 2005