Experimental and Theoretical Investigations of Light Scattering in Fullerenes

9624102 Menendez：这个项目包括富勒烯动力学和电子特性的实验/理论光散射研究。利用共振和非共振入射辐射，对从固体分子到气相孤立分子的系统进行实验，将阐明分子振动和旋转之间的相互作用，固态堆积和无序的影响，以及电子/振动耦合。这些实验将通过第一性原理计算和强大的光散射时间相关技术进行理论分析。这个项目的结果将有助于理解技术上的重要问题，例如，被认为是导致掺杂富勒烯超导性的动力学扬-泰勒相互作用的细节，并将阐明基本问题，如由缺陷或非谐性引起的振动局域化。该项目包括对富勒烯（一种新型碳基材料）性能的实验/理论研究。富勒烯由于其不寻常的性质和重要应用的可能性而引起了极大的科学和技术兴趣，从超导性到金刚石薄膜的制造。为了阐明分子振动和旋转之间的相互作用，固体堆积和无序的影响，以及电子和振动之间的相互作用，将在从分子到气相孤立分子的系统中进行涉及激光散射的实验。这些实验将借助强大的计算机技术进行理论解释。这些结果将有助于理解技术上的重要问题，如富勒烯超导性的量子力学机制，并将阐明振动局域化等基本问题

9624102 Menendez: This project comprises an experimental/theoretical light scattering study of the dynamical and electronic properties of fullerenes. Experiments on systems ranging from molecular solids to isolated molecules in the vapor phase, using both resonance and off-resonance incident radiation, will elucidate the interplay between molecular vibrations and rotations, the effects of solid-state packing and disorder, and the electron/vibrational coupling. The experiments will be analyzed theoretically by means of first-principles calculations and powerful time-correlator techniques for light scattering. Results from this project will contribute to the understanding of technologically important problems, e.g. details of the dynamical Jahn-Teller interaction thought to be responsible for superconductivity in doped fullerenes, and will shed light on fundamental problems, such as vibrational localization induced by defects or anharmonicity. ***This project comprises an experimental/theoretical study of the properties of fullerenes, a new class of carbon-based materials. Fullerenes are of great scientific and technological interest due to their unusual properties and the possibility of important applications, ranging from superconductivity to the fabrication of diamond films. Experiments involving scattering of laser light will be performed on systems ranging from molecular to isolated molecules in the vapor phase, in order to elucidate the interplay between molecular vibrations and rotations, the effects of solid- state packing and disorder, and the interactions between the electrons and vibrations. The experiments will be interpreted theoretically by means of powerful computer techniques. The results will contribute to understanding of technologically important problems such as the quantum mechanical mechanisms responsible for superconductivity in fullerenes, and will also shed light on fundamental problems such as vibrational localization.***