Interlayer pairing-induced partially gapped Fermi surface in trilayer La4Ni3O10 superconductors

We explore the superconducting pairing mechanisms in the trilayer\n$\\mathrm{La}_4\\mathrm{Ni}_3\\mathrm{O}_{10}$ material through self-consistent\nmean-field calculations. Our findings demonstrate that intralayer pairings are\nsubstantially weaker compared to interlayer ones. Remarkably, in the state\ncharacterized by interlayer pairing, we detect the presence of partially gapped\nFermi surfaces, a fascinating occurrence attributable to the disparity between\nthe inner and outer conducting layers of\n$\\mathrm{La}_4\\mathrm{Ni}_3\\mathrm{O}_{10}$. Moreover, this study provides\nvaluable insights into the lower superconducting transition temperatures\nobserved in $\\mathrm{La}_4\\mathrm{Ni}_3\\mathrm{O}_{10}$ compounds. This\ncontributes to a deeper understanding of its distinct superconducting\nattributes.\n