U.S.-Korea Cooperative Research: Theoretical Study of Dielectric Response Function and Applications to the Screening, Optical, & Superconducting Properties of Solid Syst

9604493路易该奖项提供资金，以允许加州大学伯克利分校物理系Steven G.Louie博士和Marvin L.Cohen博士与韩国先进科学技术研究所物理系Kee Joo Chang博士和首尔国立大学理论物理中心Jsonon Ihm博士进行为期24个月的介电响应函数及其在固体体系中的应用的合作研究计划。将应用于研究光学性质、准粒子激发能、超导体中的电子-电子排斥相互作用以及大系统的介电屏蔽。最近的理论进展，超越了标准的动量空间形式，使介电矩阵和固体电子结构的有效第一原理计算成为可能。这项研究的意义在于更深入地了解固体中的电子-电子相互作用，特别是那些表现在交换相关效应和局域场屏蔽中的相互作用。合作者是本研究领域公认的专家。他们的合作将包括他们的研究生，旨在为美国和韩国在这一科学领域建立一座智力桥梁。该项目与美韩合作科学计划的目标相关，该计划旨在通过交流科学信息、想法、技能和技术以及通过在互利问题上的合作来提高美国和韩国科学家和工程师之间的合作水平。该项目为美国研究生提供了一次国际研究经验。韩国的参与得到了韩国科学与工程基金会(KOSEF)的支持。***

9604493 Louie This award provides funds to permit Drs. Steven G. Louie and Marvin L. Cohen, Department of Physics, University of California, Berkeley, to pursue with Dr. Kee Joo Chang, Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), and Dr. Jisoon Ihm, Center for Theoretical Physics, Seoul National University, for 24 months, a program of cooperative research on the dielectric response function and its applications to solid systems. Applications will be made to investigate optical properties, quasiparticle excitations energies, electron-electron repulsive interactions in superconductors, and dielectric screening of large systems. Recent theoretical advances, going beyond the standard momentum space formalism, have allowed the efficient first-principles calculation of the dielectric matrix and the electronic structure of solids. The significance of the proposed research is to provide deeper insight into the understanding of electron- electron interactions in solids, in particular, those manifested in exchange-correlation effects and local-field screening. The collaborators are recognized experts in the field of this research. Their collaboration, which will include their graduate students, is intended to provide an intellectual bridge between the U.S. and Korea in this field of science. This project is relevant to the objectives of the U.S.-Korea Cooperative Science Program which seeks to increase the level of cooperation between U.S. and Korean scientists and engineers through the exchange of scientific information, ideas, skills, and techniques and through collaboration on problems of mutual benefit. This project provides an international research experience for a U.S. graduate student. Korean participation is supported by the Korea Science and Engineering Foundation (KOSEF). ***