Physical Properties of Transuranium Compounds

建立具有局域化4f电子和三维电子的固体强相关电子系统的统一模型具有重要意义。5f电子系统位于三维和4f电子系统之间，是基础固体物理学中非常重要的研究领域。本项目的主要目的是与国际公司进一步扩展这一重要研究，并通过该项目克服日方研究的不足。幸运的是，在我国，新的锕系元素研究是由教育、科学和文化部资助的，用于东北大学材料研究所大井分院。我们希望派遣瓦莱分院的主要人员到卡尔斯鲁厄研究所，吸收欧洲科学家过去20年来积累的一些经验，为进一步扩大瓦莱分院的规模作出贡献。他们是晶体生长和基础物理物质方面的专家。在这方面，要探索的锕系化合物的低载流子系统被认为是最有趣和迷人的。因此，我们提出了制备超铀化合物和硫属化合物等新体系。这个项目的另一个重点是锕系元素在世界上的研究问题。我们认为，真正纯化的单晶尚未得到证实，在他们生产的许多样品中显示出dHvA振荡，这证明了样品的质量，并为物理见解提供了基础。因此，我们建议检查卡尔斯鲁厄的所有样品是否获得dHvA信号。但是欧洲的情况不能立即对我们的建议做出反应，因为他们没有足够的设备来回应我们的建议。在此基础上，我们建议建立一套仪器来确认样品是否合格，并反馈如何制作样品来显示格勒诺布尔的dHvA效应。

It is very important to establish of unified model of strong correlated electron systems with localized 4f electron and itenerant 3d electron in solid state. 5f electron system situates just between 3d and 4f systems and very important to research in fundermental solid state physics. Main purpose of this project is to make further extension of this important research with international corporation and overcome the poor situation of Japan side research through this project. Fortunatly in our country the new Actinide research are granted by the Ministry of Education, Science and Culture for Oarai branch of Institute for Material Research in Tohoku university. We wished to send the key persons in Oarai branch to Karlsruhe institute to absorbe several experience stored for past 20 years in European scientist and contribute to further extension of Oarai branch of IMR. They are specialists for crystal growth and 4f substances in fundamental physics. In this respect, the low carrier systems of Actinide compounds to be explored are thought as the most interesting and fascinating. So we proposed to prepare new systems such as transuranium pnictides and chalchogenides. Another point of this project is the Actinide research problem in the world. We thouhgt that real purified single crystals were not yet confirmed in their produced many samples to be showed dHvA oscillations which proved the sample quality and gave the foundation of the physical insights. So we proposed to check the all samples in Karlsruhe if the dHvA signal obtain or not. However the situations in Europe could not immediately respond to this proposal, because they had not enough equipments to respond our proposals. Then we propose to establish the apparatus to confirm the good samples or not and feed back how to produce the sample to show dHvA effects in Grenoble.