Presentation Information
[9p-PA2-18]Theoretical study on the possibility of interlayer pairing s-wave superconductivity in La3Ni2O6H at ambient pressure
〇(M2)Kenta Yamano1, Shu Kamiyama1, Masayuki Ochi1,2, Kazuhiko Kuroki1 (1.Univ. of Osaka, 2.Univ. of Osaka FRC)
Keywords:
superconductivity
In La3Ni2O6, which possesses a tetragonal structure at ambient pressure, superconductivity has not been observed due to its weak interlayer coupling(t⊥). In this study, we focus on a hypothetical compound, La3Ni2O6H. By inserting hydrogen atoms between the Ni layers, we aim to stabilize the tetragonal structure and enhance t⊥ in this system, potentially leading to a high Tc . Based on first-principles calculations and the fluctuation-exchange (FLEX) approximation, it is suggested that a Tc comparable to that of La3Ni2O7 under high pressure can be expected.