メーリングリストのみなさま，
物性研談話会担当の川島です．
物性研において，ETH の Sigrist 教授をお招きして，下記のように談話会を行います．ぜひご参加ください．（英語講演です．）
We will have a ISSP colloquium. Your participation is most welcome. The presentation will be made in English.
※ オンサイトミーティングですが，参加人数把握のため，下記のサイトより参加登録をお願いします．For records, every participant is requested to register in advance from the following website.
Date: Thursday, October 19th, 2023 16:00 〜
Place: Media Hall, Kashiwa Library, the University of Tokyo
Speaker: Prof. Manfred Sigrist
Affiliation: ETH Zurich
Title: The Unusually Resilient Unconventional Superconductor Sr2RuO4
Abstract: Despite extensive research, Sr2RuO4 has remained an enigmatic unconven-tional superconductor for nearly three decades. Initially categorized as a prime example of a chiral spin-triplet superconductor, doubts regarding this classification only emerged four years ago when evidence for spin-singlet pairing appeared. This unexpected shift has introduced a significant conun-drum as the newly proposed spin-singlet nature presents considerable new obstacles in establishing a pairing symmetry that aligns with the wealth of existing experimental data. This colloquium aims to provide an overview of the current challenges in harmonizing theoretical perspectives with present state of experimental reality.
講師紹介：
Sigrist教授は異方的超伝導体をはじめとする強相関電子系に関する研究で世界的に著名な理論家です．特に，前野グループが発見したSr2RuO4の超伝導について，T. M. Rice 教授と共にカイラルp 波状態を提唱し，関連する多くの研究に大きな影響を与えました．Sr2RuO4に関する研究は最近の実験結果によって新しい局面を迎えています．このテーマの研究を最初期からリードされている専門家に，最近の実験結果も踏まえた総括をしていただきますので，皆様，是非ご参加下さい．
About the speaker:
Professor Sigrist is a renowned theoretician for his works on strongly correlated electron systems, such as anisotropic superconductors. In particular, for the superconductivity of Sr2RuO4, which was discovered by the Maeno group, he proposed a chiral p-wave state in collaboration with Professor T. M. Rice. Their work had a great influence on many related studies. Recent experimental results opened a new phase for the research on Sr2RuO4. Professor Sigrist, who has been a leading figure on this theme since its beginning, will give a summary based on recent experimental developments. Please join us.
——
Naoki Kawashima
kawashima@issp.u-tokyo.ac.jp
kawashima.issp.u-tokyo.ac.jp
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R5.10.19.pdf