標題: | Instantaneous normal mode analysis of liquid Na |
作者: | Wu, TM Tsay, SF 物理研究所 Institute of Physics |
公開日期: | 22-十一月-1996 |
摘要: | The instantaneous-normal-mode (INM) densities of states for liquid Na in four realistic thermodynamic states are obtained by molecular-dynamics simulation. The exponent functions derived from the INM densities of states are found to fit well with a binomial of frequency for the imaginary-frequency lobe and a three-term polynomial for the real-frequency lobe. Through the study of the size dependence for the participation ratios of INMs, we show that for both the real-frequency and the imaginary-frequency lobes, INMs of low frequencies are extended modes and INMs in the high-frequency end are localized modes. However, each lobe has a broad transition region in frequency from the extended to localized INMs. (C) 1996 American Institute of Physics. |
URI: | http://hdl.handle.net/11536/921 |
ISSN: | 0021-9606 |
期刊: | JOURNAL OF CHEMICAL PHYSICS |
Volume: | 105 |
Issue: | 20 |
起始頁: | 9281 |
結束頁: | 9287 |
顯示於類別: | 期刊論文 |