[23a-A307-1~9] 6.3 Oxide electronics

9:00 AM - 9:30 AM JST(12:00 AM - 12:30 AM UTC)

[23a-A307-1] [INVITED] Possible high-T_c superconductivity in Ir-substituted perovskite-type manganese oxides

〇Kenichi Kaminaga¹, Shingo Maruyama¹, Yuji Matsumoto¹ (1.Tohoku Univ.)

Keywords:

superconductivity,oxide electronics,pulsed laser deposition

We present the observation of possible superconductivity in thin films of (La_0.7Sr_0.3)(Mn, Ir)O₃ (LSMIO), in which partial substitution of Mn with Ir has been implemented. Notably, the superconducting transition temperature (T_c) of LSMIO exhibits variation depending on the Ir concentration, with a maximum T_c of 125 K achieved at approximately 10% Ir concentration. It is worth highlighting that LSMIO possesses distinct characteristics compared to existing high-temperature superconductors, as it is a cubic system and represents a hetero-d electron system consisting of Mn 3d and Ir 5d orbitals. This work has the potential to open up new avenues for interdisciplinary research of "hetero-d electron systems" within the field of oxide electronics, promising significant advancements and potential applications.