Science for High-Tc Superconductors

在“重点领域科学研究”项目“高温超导体科学”中，我们的主要目标是：(1)寻找具有更高T_c的新型超导材料(2)合成高质量的单晶和薄膜(3)探索正常状态下的电子态(4)澄清超导配对机制(5)了解混合状态下异常性质的起源(6)寻找有效的钉钉机制(7)在器件上的应用为了有效地推进研究，我们根据研究领域组织了五个研究小组和一个研究小组管理。在项目期间，我们举办了很多研讨会，讨论研究过程中出现的问题。定期出版通讯，供各小组之间交流。我们最初的目标大部分已经成功实现了。我们的项目成果在各种国际会议上发表，在权威杂志上发表了很多论文。项目取得的主要成果如下：(1)目前已知的高t_c铜酸盐中有三分之一是由参与该项目的成员发现的。(2)我们组是世界上铜超导体样品的主要供应商。许多国外研究小组使用我们的样本进行重要的实验。(3)我们的成员对铜超导体中观察到的不寻常性质的理解做出了很大的贡献。(4)由于对铜超导体中电子态的研究，人们认识到在金属相和绝缘相之间的边界区域存在一种称为“异常金属相”的新相。该相的研究有可能表明高t_c铜酸盐具有适用于器件的新功能，例如约瑟夫森等离子体振荡。我们计划在本项目成果的基础上出版一本新的高温超导标准教科书。少

In the project, Scientific Research on Priority Area, "Science for High-Tc Superconductors" the followings were our main goals : (1) Search for new superconducting materials having higher T_c (2) Synthesis of high quality single crystals and films (3) Exploring the electronic state in the normal state (4) Clarification of the superconducting pairing mechanism (5) Understanding of the origin of the unusual properties in the mixed state (6) Search for effective pinning mechanisms (7) Applications to devicesTo advance the researches efficiently we organized five research groups according to the research areas and a group for management. We had a lot of workshops during the term of the project for discussing problems which occur in the course of research. Newsletters were periodically published for communication among the groups.The goals we aimed at in the beginning have been successfully achieved in most parts. The results of our project were reported in various international conferences … More and a lot of papers were published in authoritative magazines.The main results achieved in the project are summarized as follows : (1) One third of the high-T_c cuprates known up to now were discovered by the members joined in this project. (2) Our groups were main suppliers of samples of cuprate superconductors in the world. Many foreign groups used our samples to perform important experiments. (3) Our members greatly contributed to the understanding of the unusual propoerties observed in cuprate superconductor. (4) As a result of the studies of the electronic states in cuprate superconductors it has been recognized that a new phase called "anomalous metallic phase" exists in the boundary area between metallic and insulating phases. The study of this phase has a possibility that a new shown that high-T_c cuprates have new functions applicable to device, for example, Josephson plasma oscillations.We are planning to publish a new standard textbook on high temperature superconductivity on the basis of the results achieve in this project. Less