New physics of low dimensional helium-three

本课题的目标是通过引入低维性来深入理解强相关费米系统3He。这个“Sohkatsu-han”团队是整个项目的总部，负责指导和定位项目。该团队最大的任务之一是组织该项目的“工作车间”，向日本的低温物理社区开放。在项目期间，我们举办了三次这样的研讨会。每次我们有大约100名参与者和40-45个演讲。项目成员介绍了他们的计划和最近的成果。与此同时，与项目密切相关的话题由非项目成员提出。进行了热烈而深入的讨论。特别是青年科学家们受到了研讨会的深刻启发。最终，这个“Sohkatsu-han”团队作为总部运作良好。最后，我们想列出这个项目取得的主要成果。在低温下，表面张力的温度依赖性得到了很好的理解。进行了超流体3He膜的第三次声音实验。阐明了HD预镀石墨吸附第2层和第3层3He的磁性。阐明了3He薄膜的弱局域化和二维费米-液体行为，并首次观察到3He有效质量的发散。该项目将于2001年3月底结束，但该项目所孕育的研究将继续进行。最终可以说这个项目是成功的。

The goal of the present project is to attain the deep understanding of the strongly correlated Fermi-system, 3He, by introducing the low dimensionality to the system.This "Sohkatsu-han" team is the headquarter of the whole project, which steers and orient the project. One of the biggest tasks of the team is to organize the "work-shop" of the project, which is open to the community of low temperature physics in Japan. We had three such workshops during the project period. Each time we had about 100 participants and 40-45 presentations. The member of the project presented their plans and recent results. At the same time, the topics close to the project were presented by non-members of the project. The hot and thorough discussions were done. Especially young scientists were deeply stimulated by the workshop. Eventually this "Sohkatsu-han" team worked out well as a head quarter. Finally we would like to list up the main results attained by this project.1. The temperature dependence of the surface tension in the low temperature was well understood.2. 3rd sound experiment of superfluid 3He film was developed.3. Magnetism of 2nd and 3rd layer 3He adsorbed on the HD pre-plated graphite was clarified.4. Weak localization and 2-dimensional Fermi-liquid behavior of 3He film were clarified and divergence of the effective mass of 3He was observed for the first time.The project will be over at the end of March 2001, but the research seeded by the project would continue. Eventually it can be said that the project was successful.