[17a-D209-1~8] 11.1 Fundamental properties

△ [17a-D209-2] Diamagnetic response in FeSe/STO grown by the PLD technique

〇(D)Tomoki Kobayashi¹, Hiroki Nakagawa¹, Hiroki Ogawa¹, Fuyuki Nabeshima¹, Atsutaka Maeda¹ (1.The Univ. of Tokyo)

Keywords:iron-based superconductor, thin film, interface superconductivity

Iron-chalcogenide superconductor FeSe has attracted much attention because the monolayer film on SrTiO₃ (STO) shows highly enhanced superconducting transition temperatures due to interface effects. We have studied on the interface superconductivity and realized the enhancement of superconductivity for films thicker than 2 nm using PLD. However, evaluations of imhomonginities of superconductivity in the samples were missing for further improvement of superconducting properties in the PLD-grown films. Here, we investigated superconducting properties in PLD-grown FeSe/STO using the mutual inductance technique.