台湾における最高学術研究機関である、中央研究院(Academia Sinica)のTien Ming Chuang先生に招待され、台湾に出張に行ってきました。今回の出張は、金沢大学でのSTMのための除振台づくりで悩んでいた時に、以前に見せてもらったChuang先生の除振台を思い出し、メールで質問をしたところ、「ご招待するので講演をしに来てくれたら装置を直接お見せしますよ。」という破格のオファーを頂いたことがきっかけでした。初日は、台北市の中央研究院、物理学研究所で、有機超伝導体Piceneの研究でお世話になった懐かしい共同研究者たちも参加する中、研究発表をして、その後長い時間をかけて装置を見せて頂き、沢山の議論をして頂きました。翌日は、半導体産業で有名な新竹市の国立清華大学を訪れました。ハンブルク時代からの友人であり、共同研究者である、Germar Hoffmann先生と、CeCoIn5の軌道秩序の論文でお世話になった、Hong-Tay Jeng先生、そして、東大時代からお隣さんで仲良くしてた、国立交通大学のLin先生などが出席してくださる中、セミナーを行いました。午後からは、研究の議論を行い、夜は、Hoffmann先生とそのご家族、それからLin先生と夕食を共にしました。Chuang先生、Hoffmann先生、Lin先生、ありがとうございました。(吉田)
I was invited to Academia Sinica in Taiwan by Dr. Tien Ming Chuang. Currently, we are planning to build a vibration dumping table for 3He-4He dilution refrigerator based STM. Because of a restriction which does not allow us to make a pit for the dewars and cryostat, we have to end up to ask companies to design tall tables, but such tall tables are generally very expensive and there is no guarantee they work well. On the other hand, J. C. Davis group in Cornel, which is the world’s best low-temperature STM group, is known to use tall tables with three legs. Dr. Chuang at Academia Sinica, who did postdoc in the group, has lots of experience to build up such tables and therefore I asked him questions about his designs. He kindly answered our questions and, in addition, he kindly gave me an invitation to visit Academia Sinica and give a talk. I accepted the offer immediately and visited Taiwan. The first day, I gave a talk at the institute of physics in the morning, and my old collaborators with who we worked together on superconducting picene molecules also joined the seminar. After lunch, Dr. Chuang showed his instruments and explained many details. We had a lot of discussions and that helped me to understand the design very well. Thanks a lot Dr. Chuang and his lab members! On the second day, I moved to Hsinchu in the morning, and visited National Tsing Hua University. Prof. Germar Hoffmann, my friend and collaborator since Hamburg, organized my seminar and Prof. Hong-Tay Jeng, who we collaborated with on orbital order work of CeCoIn5, and Prof. Chun-Liang Lin who has been my friend since we shared time in University of Tokyo joined the seminar. After lunch, we discussed physics and instrumentations and future plan for exchange student program between our universities. At the night, we enjoyed dinner with Prof. Hoffmann’s family and Prof. Lin. Thanks a lot, Prof. Hoffmann and Prof. Lin! (Y.Y.)