A research group led by Project Assistant Professor Susumu Minami (at the time of the research; now Assistant Professor at the Graduate School of Engineering, Kyoto University), doctoral student Yangming Wang (at the time of the research), doctoral student Hiroto Nakamura (at the time of the research), Lecturer Akito Sakai, and Professor Satoru Nakatsuji at the Graduate School of Science, The University of Tokyo, in collaboration with Professor Ryotaro Arita of the same university (concurrently Team Director, RIKEN Center for Emergent Matter Science), Fundamental Science Research Fellow Rikuto Oiwa at RIKEN Center for Emergent Matter Science (at the time of the research; now Lecturer at Hokkaido University), Associate Professor Seigo Souma, and Professor Takafumi Sato at the Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, observed the largest-ever transverse magneto-thermoelectric conductivity at room temperature in the ferrimagnetic material GdCo₅. The group also clarified, both experimentally and theoretically, that the origin of this giant magneto-thermoelectric effect is an itinerant flat band arising from the interference effect of wave functions.

See below for more information.

• UTokyo FOCUS：https://www.s.u-tokyo.ac.jp/en/press/11128/
• Aritcle URL：https://doi.org/10.1002/adma.202517521
• Nakatsuji Lab：https://www.nakatsuji-lab.phys.s.u-tokyo.ac.jp/