[8p-N404-1~16] 11.1 Fundamental properties

3:45 PM - 4:00 PM JST(6:45 AM - 7:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[8p-N404-9] Pressure-induced superconductivity in trilayer nickelate La₄Ni₃O_10+δ with different oxygen treatment

〇(M2)Hibiki Nagata^1,2, Hiroya Sakurai¹, Ryo Matsumoto¹, Kensei Terashima¹, Keisuke Hirose³, Hiroto Ohta³, Masaki Kato³, Yoshihiko Takano^1,2 (1.NIMS, 2.Univ. of Tsukuba, 3.Doshisha Univ.)

Keywords:

superconductivity,pressure,Nickelate

We discovered that trilayer nickelate La₄Ni₃O_10+δ, which contains three adjacent NiO₂ planes in its unit cell, exhibits superconductivity under high pressure. In this study, we synthesized La₄Ni₃O_10+δ samples with different oxygen content and investigated the relationship between their superconducting properties and oxygen content. Electrical resistance measurements under high pressure revealed that the superconducting transition temperature (T_c) of La₄Ni₃O_10+δ varies significantly with slight changes in oxygen content and tends to decrease near the stoichiometric composition.