Possible liquid-nitrogen-temperature superconductivity driven by perpendicular electric field in the single-bilayer film of La₃Ni₂O₇ at ambient pressure.

ABSTRACT: Recently, high-temperature superconductivity (HTSC) is found in the La₃Ni₂O₇/SrLaAlO₄ ultrathin film with critical temperature T_c above the McMillan limit at ambient pressure (AP). It is eager to enhance T_c of La₃Ni₂O₇ at AP. We propose that a perpendicular electric field strongly enhances T_c in the single-bilayer film of La₃Ni₂O₇ at AP. Under electric field, the layer with lower potential energy will accept electrons flowing from the other layer to fill in the Ni- 3dx2-y2 orbitals, as the nearly half-filled Ni- 3dz2 orbital cannot accommodate more electrons. With the enhancement of the filling fraction in the 3dx2-y2 orbitals in this layer, the int

SUBMITTER: Shao ZY 

PROVIDER: S-EPMC12855812 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature