...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physical review letters >Lattice Dynamics of Incommensurate Composite Rb-IV and a Realization of the Monatomic Linear Chain Model
【24h】

Lattice Dynamics of Incommensurate Composite Rb-IV and a Realization of the Monatomic Linear Chain Model

机译：不相称的复合Rb-IV的晶格动力学及单原子线性链模型的实现

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Longitudinal-acoustic (LA) phonons have been studied by inelastic x-ray scattering in the high-pressure incommensurate host-guest system Rb-IV in the pressure range of 16.3 to 18.4 GPa. Two LA-like phonon branches are observed along the direction of the incommensurate wave vector, which are attributed to separate lattice vibrations in the host and guest subsystems. The derived sound velocities for the host and the guest, v_h and v_g, respectively, are similar in magnitude [v_h = v_g = 3840(100) m/s at 18 GPa], but our results indicate rather different pressure dependences of dv_h/dP = 140(60) m/sGPa~(-1) and dv_g/dP = 280(80) m/sGPa~(-1). The observations for the one-dimensional Rb guest chains are reproduced quantitatively on the basis of the monatomic linear chain model and the measured compressibility of the chains.
机译：通过非弹性X射线散射，在压力范围为16.3至18.4 GPa的高压不对称主客体系统Rb-IV中研究了纵向声（LA）声子。沿着不相称的波矢方向观察到两个类似LA的声子分支，这是由于主子系统和来宾子系统中的晶格振动分开。主机和宾客的推导声速v_h和v_g的幅值相似[v_h = v_g = 3840（100）m / s在18 GPa时]，但我们的结果表明dv_h / dP的压力依赖性相当不同＝ 140（60）m / sGPa·（-1），dv_g / dP ＝ 280（80）m / sGPa·（-1）。在单原子线性链模型和测得的链可压缩性的基础上，定量再现了一维Rb客体链的观察结果。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号