"Taro Tatsuno,Joji Nasu,Eriko Mizoguchi,Makoto Naka,Sumio Ishihara","Magnetic Field Effects in a Correlated Electron System with Spin-State Degree of Freedom -Implication of an Excitonic Insulator-",,"Journal of the Physical Society of Japan","The Physical Society of Japan","  85",,"  083706",2016,July
"Joji Nasu,Tsutomu Watanabe,Makoto Naka,Sumio Ishihara","Phase diagram and collective excitations in an excitonic insulator from an orbital physics viewpoint",,"Physical Review B",,"Vol. 93","No. 20","pp. 205136",2016,May
"Naoyuki Katayama,Kenta Kimura,Yibo Han,Joji Nasu,Natalia Drichko,Yoshiki Nakanishi,Mario Halim,Yuki Ishiguro,Ryuta Satake,Eiji Nishibori,Masahito Yoshizawa,Takehito Nakano,Yasuo Nozue,Yusuke Wakabayashi,Sumio Ishihara,Masayuki Hagiwara,Hiroshi Sawa,Satoru Nakatsuji","Absence of Jahn-Teller transition in the hexagonal Ba3CuSb2O9 single crystal",,"Proceedings of the National Academy of Sciences",,"Vol. 112","No. 30","pp. 9305-9309",2015,July
"Joji Nasu,Sumio Ishihara","Resonating valence-bond state in an orbitally degenerate quantum magnet with dynamical Jahn-Teller effect",,"Physical Review B",,"Vol. 91","No. 4","pp. 045117",2015,Jan.