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

2:35 PM - 3:05 PM JST(5:35 AM - 6:05 AM UTC)

[14p-K206-4] Are nickelate high-T_c superconductors worth pushing?

〇Kentaro Kitagawa¹ (1.ISSP, Univ. of Tokyo)

Keywords:

high-Tc,nickelate,pressure-induced superconductivity

Pressure-induced nickelate superconductivity and suprconductivity evaluation techniques will be discussed. The 80K superconductivity in La₃Ni₂O₇ was first reported solely as resistivity drop in 2023. In 2024, we suscessfully proved bulkiness of the 80K superconductivity in La₂PrNi₂O₇. It has been very difficult to measure Meissner volume fraction under 15GPa-class pressure, required for material development of nickelate. We are developing a rapid evaluation process for volume fractions of pressure-induced superconductors, particulary useful for nickelate superconductivity study.