[14p-K206-1~10] New trend in high Tc superconductors ~ What material is beyond cuprate ? ~

4:50 PM - 5:05 PM JST(7:50 AM - 8:05 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[14p-K206-8] Preparation of La₃Ni₂O₇ Thin Film by PLD and Epitaxial Strain Effects

〇Kota Morita¹, Hirotaka Okabe^2,3, Jumpei G. Nakamura³, Hideki Kuwahara¹, Ryosuke Kadono³, Tadashi Adachi¹ (1.Sophia Univ., 2.IMR, Tohoku Univ., 3.KEK-IMSS)

Keywords:

Double-layer nickelates,Pulsed laser deposition,Pressure-induced superconductivity

To investigate the relationship between pressure and physical properties of La₃Ni₂O₇, which exhibits superconductivity with T_c ~ 80 K under high pressure, La₃Ni₂O_7-δ thin films were fabricated on LaAlO₃ substrates with smaller in-plane lattice constants using the pulsed laser deposition method utilizing a Nd:YAG laser. As a result, the films showed lower electrical resistivity and semiconductor-like temperature dependence compared to bulk samples reported in previous studies. This suggests that the compressive strain from the substrate improved electrical conductivity, and similar to bulk samples, the films may exhibit semiconductor-like behavior under applied pressure.