第3回物理工学科教室談話会[Dr. Joseph G. Checkelsky・7/12(水)14時~]

講 師:Dr. Joseph G. Checkelsky
所 属:Associate Professor, Department of Physics,Massachusetts Institute of Technology
題 目:Flat Bands and Correlated Metallic States in Kagome Metals
日 時::2023 年 7 月 12 日(水) 14:00~
Date and Time:July 12, 2023 (Wednesday) 14:00-
場 所:工 6 号館 2 階 62 号講義室(対面のみ)
Place :Lecture Room 62, 2nd floor, Engineering Bldg. 6 (in-person only)

The notion of an electronic flat band refers to a collectively degenerate set of quantum mechanical eigenstates in periodic solids. The vanishing kinetic energy of flat bands relative to the electron-electron interaction is expected to result in a variety of many-body quantum phases of matter. Here we present recent developments in realizing flat bands in transition element-based kagome metals. We will present recent experiments in which a partial filling of a flat band is associated with unusual transport and thermodynamics that recall those of strongly correlated systems. We will also comment on the potential role of band topology and prospects for using similar lattice and orbital engineering to realize a broader class of flat band systems.

紹介教員: Max Hirschberger 准教授(物理工学専攻)、渡辺 悠樹 准教授(物理工学専攻)