title: Does supercooled liquid Si have a density maximum?
abstract: We have performed precise measurements of the density of supercooled liquid silicon (l-Si) in the temperature range of 1530-1800 K using an electromagnetic levitation (EML) technique with static magnetic fields. We also performed first-principles molecular dynamics simulation (FPMD) of supercooled l-Si. The observed density of the supercooled l-Si and the FPMD results show good agreement in the temperature range of 1530-1800 K. The structure of the supercooled l-Si also showed good agreement between the experimental measurements and FPMD simulations. Based on these results, we discuss nucleation in supercooled l-Si and also the existence of a density maximum in the supercooled l-Si, which is well known in water at 4 degrees C.
authors.affiliation: Department of Physics, Gakushuin University, 1-5-1 Mejiro, Tokyo 171-8588, Japan. masahito.watanabe@gakushuin.ac.jp
authors.forename: Masahito
authors.initials: M
authors.lastname: Watanabe
authors.forename: Masayoshi
authors.initials: M
authors.lastname: Adachi
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Morishita
authors.forename: Kensuke
authors.initials: K
authors.lastname: Higuchi
authors.forename: Hidekazu
authors.initials: H
authors.lastname: Kobatake
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Fukuyama