[23p-D215-1~16] 11.1 Fundamental properties

[23p-D215-5] Thickness dependence of T_c of FeSe/SrTiO₃ grown by the PLD technique

〇(M2)Tomoki Kobayashi¹, Hiroki Ogawa¹, Fuyuki Nabeshima¹, Atsutaka Maeda¹ (1.Dept. Basic Science, Univ. of Tokyo)

Keywords:iron-based superconductor, iron chalcogenide, thin films

Iron chalcogenide superconductor FeSe has high tunability of superconducting transition temperature (T_c). Notably, monolayer on SrTiO₃ substrate has attracted much attention for the interface superconductivity with much higher T_c than bulk. Last time, we reported realizing interface superconductivity in PLD-grown films with thicknesses of 10 nm or higher, while all reports of interface superconductivity had been realized in MBE-grown films. In this work, we report the successful growth of films thinner than reported last time and their superconducting properties.