U.S.-Korea Cooperative Research on Electron Correlation Effects and Dielectric Functions of High-Tc Superconducting Oxides

该提案要求资金允许Marvin L.科恩， 加州大学伯克利分校物理学教授， 与首尔物理学教授Jisoon Ihm博士合作 国立大学教授Kee Joo Chang博士 物理学，韩国科学技术高等研究院 （KAIST），为期24个月，合作方案， 高温电子性质的研究 超导体 最近新的理论方法 是为了研究电子在固体中如何相互作用而开发的。 这些方法将用于研究电子-电子 相互作用和超导性，一般来说，与特定的 在高转变温度超导中的应用 氧化物 高温超导领域最近有 随着高温的发现， 氧化物的超导性 虽然许多机制 有人建议解释这种现象，目前有 对它的根本原因没有共识。 三 合作者将使用一种新的方法来研究这些系统， 与介电函数计划之间的相互作用 电子和声子以及电子和集体之间 电子激励 三位科学家 参与这个项目的人都在这个领域工作， 独立研究和与PI合作。 美国和韩国的合作者受到高度尊重 科学家们不仅有广泛的个人研究， 记录，也是成功合作的记录， 提案的领域。 该项目与 美国的目标-韩国合作科学计划 该计划旨在提高美国与 和韩国科学家和工程师通过交流， 科学信息、思想、技能和技术， 通过在互利问题上的合作。 韩国 参与该项目得到了韩国的支持 科学和工程基金会。 PI的主要 研究费用由NSF资助号DMR-8818404支持， 目前的项目增加了一个国际合作社， 维度

This proposal requests funds to permit Dr. Marvin L. Cohen, Professor of Physics, University of California, Berkeley, to pursue with Dr. Jisoon Ihm, Professor of Physics, Seoul National University, and Dr. Kee Joo Chang, Professor of Physics, Korea Advanced Institute of Science and Technology (KAIST), for a period of 24 months, a program of cooperative research on the electronic properties of high temperature superconductors. New theoretical approaches recently have been developed to examine how electrons interact in solids. These approaches will be applied to study electron-electron interactions and superconductivity, in general, with specific applications to the high transition temperature superconducting oxides. The field of high temperature superconductivity recently has attracted much attention with the discovery of high temperature superconductivity in oxides. Although many mechanisms have been suggested to explain this phenomenon, at present there is no consensus regarding its basic cause. The three collaborators will use a new approach to study these systems, with a dielectric function scheme for interactions between electrons and phonons and between electrons and collective electronic excitations. Each of the three scientists involved in this project has worked in this field of research both independently and in collaboration with the PI. The U.S. and Korean collaborators are highly respected scientists who not only have extensive individual research records but also a record of successful collaboration in the field of the proposal. 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. Korean participation in the project is supported by the Korea Science and Engineering Foundation (KOSEF). The PI's primary research costs are supported under NSF Grant No. DMR-8818404, to which the present project adds an international cooperative dimension.