Some Theoretical Studies of the Properties of Condensed Matter

凝聚态物质性质的一些理论研究

• 批准号: 9112830
• 负责人: W. Gilbert Clark
• 金额: $ 9万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-08-15 至 1994-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9112830&HistoricalAwards=false
• 关键词: Some; Theoretical; Studies; Properties; Condensed

Research will be undertaken to study nonperturbatively the role of anharmonicity for vibrations of random networks; to conduct numerical calculations of inelastic scattering amplitudes from vibrating fractal structures; to study the scaling properties of the sound velocity for mixed amorphous materials; and, to investigate the nuclear spin relaxation in dilute hole-doped high temperature superconductors. %%% Certain disordered materials exhibit structures which are best described by fractals. The proposed research uses the model of fractons, or excitations on a fractal structure, to interpret various physical properties of these disordered materials. Additional work will be conducted on nuclear relaxation in the high temperature superconductors.

将进行研究，以非扰动地研究非谐调性在随机网络的振动中的作用；从振动分形结构进行非弹性散射幅度的数值计算；研究混合无定形材料的声速的缩放特性；并研究稀孔掺杂高温超导体中的核自旋松弛。 某些无序材料展示了分形最好描述的结构。 拟议的研究使用分形模型或分形结构上的激发来解释这些无序材料的各种物理特性。 将在高温超导体中进行核松弛的其他工作。