[13p-4A-1~18] 11.1 Fundamental properties

[13p-4A-9] Tl-substitution Effects in Layered Superconductor BaTi₂Sb₂O

〇Takeshi Yajima¹, Wataru Ishii¹, Zenji Hiroi¹ (1.ISSP, Univ. of Tokyo)

Keywords:Superconductivity,Mixed Anion,Square Lattice

We studied Tl-substitution effects in the mixed anionic superconductor BaTi₂Sb₂O with a Ti₂O square lattice. Though the CDW coexisted with superconductivity is suppressed by Tl-doping, superconducting transition temperature is not enhanced. The results imply that the relationship between CDW and superconductivity is not competitive in BaTi₂Sb₂O.