[19a-C102-1~11] 6.3 Oxide electronics

[19a-C102-7] [Young Scientist Presentation Award Speech] Effects of lattice strain on superconductivity in LaO epitaxial thin films

〇Kenichi Kaminaga^1,2, Daichi Oka², Tomoteru Fukumura^2,3,4, Tetsuya Hasegawa¹ (1.Univ. Tokyo, 2.Tohoku Univ., 3.WPI-AIMR, 4.CSRN)

Keywords:superconductivity, thin film, rare earth

The rock-salt structure LaO has been known as an insulating block layer contained in a layered structure, typified by a high-temperature superconductor such as (La,Sr)₂CuO₄. However, we previously reported that LaO epitaxial thin films on YAlO₃(110) substrate showed superconductivity with the transition temperature of about 4.5 K at the maximum. In this report, we report the increase of the transition temperature by controlling the lattice strain of LaO thin films.