Pressure-Induced Superconductivity in La₄Ni₃O₁₀₊<i>_δ</i> (<i>δ</i> = 0.04 and −0.01)

Abstract

The superconducting transition temperatures, $T_{\\mathrm{c}}$, of\nLa$_{4}$Ni$_{3}$O$_{10+\\delta}$($\\delta$ = 0.04 and -0.01) were determined\nunder various pressures up to 124.9 GPa by electrical resistance measurements\nwith a diamond anvil cell. $T_{\\mathrm{c}}$ exhibits a strong dependence on\noxygen content within the pressure range of approximately 20 GPa and 80 GPa. At\n48.0 GPa, $T_{\\mathrm{c}}$ of La$_{4}$Ni$_{3}$O$_{10.04}$ peaks at 36 K,\nmarking the highest $T_{\\mathrm{c}}$ reported thus far.\n