"Koshi Takenaka,N. Inoue,Y. Mizuno,Y. Okamoto,N. Katayama,Yuki Sakai,Takumi Nishikubo,Masaki Azuma","Extended operating temperature window of giant negative thermal expansion in Sn-doped Ca<sub>2</sub>RuO<sub>4</sub>",,"APPLIED PHYSICS LETTERS",,"Vol. 113","No. 7","p. 071902",2018,Aug.