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

本研究的目的是阐明具有多种奇异物理性质的高温超导体及其相关材料。这些物理性质包括高温超导电性、金属-绝缘体相变、绝缘体-超导体相变、磁性相变和晶格不稳定性。新材料的发现，特别是新型高温超导体的发现，为这一强关联电子系统提供了新的线索。基于材料设计的新概念，我们发现了新的铜氧化物高温超导体、碳酸盐基团和其他许多铜-、非铜-氧化物。从我们的新材料和这些电子性质来看，人们普遍认为，强的电子关联、自旋涨落、二维是实现高T_C超导的关键条件。在本研究项目的最后阶段，我们出版了总成果报告书，其中包括与本项目相关的发表清单和主要展示清单。

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.