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Science for High-Tc Superconductors

高温超导体科学

基本信息

批准号：
04240101
负责人：
TACHIKI Masashi
金额：
$ 95.04万
依托单位：
Tohoku University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research on Priority Areas
财政年份：
1992
资助国家：
日本
起止时间：
1992 至 1995
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04240101/
关键词：
high temperature superconductivity newsletter synthesis of new materials single crystals symmetry of superconducting state anomalous metal Josephson plasma publication of textbook 成果とりまとめミニ研究会異常金属相スピンギャップ d波超伝導超伝導デバイス高圧合成法

项目摘要

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

在优先领域的科学研究项目“高温超导体科学”中，我们的主要目标如下：（1）寻找具有更高T_c的新超导材料（2）高质量单晶和薄膜的合成（3）正常态电子态的探索（4）超导配对机制的阐明（5）（6）寻找有效的钉扎机制（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管理小组。在项目期间，我们举办了许多研讨会，讨论研究过程中出现的问题。我们定期出版通讯，供各团体之间交流。我们最初设定的目标已在大部分地区成功实现。我们项目的成果在各种国际会议上作了报告 ...更多信息本项目取得的主要成果如下：（1）目前已知的高T_c铜酸盐中，有三分之一是由本项目成员发现的。(2)我们集团是世界上铜氧化物超导体样品的主要供应商。许多外国团体使用我们的样品进行重要实验。(3)我们的成员对理解在铜氧化物超导体中观察到的不寻常性质作出了巨大贡献。(4)通过对铜氧化物超导体电子态的研究，发现在金属相和绝缘相的交界处存在一种新相，称为“反常金属相”。对这一相的研究有可能发现高温超导铜氧化物具有新的应用于器件的功能，如Josephson等离子体振荡，我们计划在此基础上出版一本新的高温超导标准教科书。少