非単純液体金属シリコンの物性とダイナミクス
2005 年 47 巻 4 号 p. 274-280
詳細
2005 年 47 巻 4 号 p. 274-280
Dynamic properties of liquid Si are investigated by means of inelastic scattering using high-resolution inelastic X-ray scattering spectrometer at BL35XU/SPring-8. The S (Q, ω) spectra clearly demonstrate the existence of propagating short wavelength mode, which shows a positive deviation from the hydrodynamic value. A specific variation of the quasielastic line shape with increasing Q is observed close to the S (Q) maximum. This finding is related to a several-ten-femtosecond retaining of the covalent bonds, which has previously been suggested by an ab initio molecular dynamics simulation.
