Magnetism and superconductivity in the $t-J$ model of $L{a}_{3}N{i}_2{O}_7$ under multiband Gutzwiller approximation

Jie-Ran Xue, Fa Wang

The recent discovery of possible high temperature superconductivity in single crystals of $L{a}_{3}N{i}_2{O}_7$ under pressure renews the interest in research on nickelates. The DFT calcul…