[Fr-AM-3F] Ute₂ and new heavy-fermion superconductors

[Fr-AM-3F-06] The First Discovery of Superconducting State and Fermi Surface Properties of YbOs₄Sb₁₂

*Tatsuma D Matsuda¹, Naoki Nakamura¹, Miharu Kishimoto¹, Sumire Ichinose¹, Ryuji Higashinaka¹, Ai Nakamura², Dai Aoki², Hisatomo Harima³, Yuji Aoki¹ (1. Tokyo Metropolitan University(Japan), 2. Tohoku University(Japan), 3. Kobe University(Japan))

Keywords:Superconductor, Yb-based compound, filled skutterudite, valence fluctuation, de Haas-van Alphen effect