"Exploring Study of High-T_CSuperconductors Based on the New Material Design"

本研究计划的目的是阐明高温超导体及其相关材料的各种奇异物理性质。这些物理性质包括高温超导、金属-绝缘体转变、绝缘体-超导体转变、磁转变和晶格不稳定性。新材料的发现，特别是新的高温超导体的发现，使人们对这一强关联电子系统有了新的认识，基于新的材料设计概念，我们发现了新的Cu氧化物高温超导体、碳酸盐系以及其它许多Cu氧化物和非Cu氧化物。从我们的新材料和这些电子性质来看，强电子关联、自旋涨落、二维性是实现高温超导的重要条件。在本研究项目的期末，我们出版了总成果报告书，其中包括与本项目相关的出版物清单和主要报告清单。

The aim of this research project is to elucidate the high-T_C superconductors and the related materials which show the veriety of exotic physical properties. This physical properties include the high-T_C superconductivity, metal-insulator transition, insulator-superconductor transition, magnetic transition and lattice instability. Discovery of new materials, especially new high-T_C superconductors, shed new light on this strongly correlated electron system.Based on the new concept of the material design, we discovered the new group of Cu oxide high-T_C superconductors, carbonate group and other many Cu-, non Cu-oxides. From our new materials and those electronic properties, it is widely accepted that the strong electron correlation, spin fluctuation, two dimensionality is a crucial condition for realizing the high-T_C superconductivity. At final term of this research project, we published the report book of the total results which include the publication list and major presentation list related to this project.