■Preface
The Night of the Nobel Prize Announcement
Nobuyuki Ishibashi......605

■Trends
Skyrmion ― 60 Years of Development
Makoto Oka......608

■Reviews
Introduction to the Research Field of Superconducting Quantum Computers
Tsuyoshi Yamamoto......610

■Researches
Unveiling the Mystery of the Growth Mechanism of Quasicrystals
Keiichi Edagawa......619

Mechanism of Superconductivity in Two-Dimensional Organic Conductors
Hiroshi Watanabe, Hitoshi Seo, and Seiji Yunoki......625

Origin of the Dramatic Change of Fission Mode in Fermium Isotope Investigated Using Langevin Equations
Yoshihiro Aritomo, Yuya Miyamoto, and Katsuhisa Nishio......631

■Physics Education
Spring Not Falling under Gravity ― International Physics Olympiad 2019
Hiroo Totsuji......637

■JPSJ Selected Papers in the Latest Issue......641

■The Path to History......644

■La Toccata......648

■Physics Community News......650

■Book Reviews......651