Pressure-Induced Superconductivity in La<sub>4</sub>Ni<sub>3</sub>O<sub>10+</sub><i><sub>δ</sub></i> (<i>δ</i> = 0.04 and −0.01)
Hibiki Nagata, Hiroya Sakurai, Yuta Ueki, Kazuki Yamane, Ryo Matsumoto, Kensei Terashima, Keisuke Hirose, Hiroto Ohta, Masaki Kato, Yoshihiko Takano
Abstract
The superconducting transition temperatures, $T_{\mathrm{c}}$, of La$_{4}$Ni$_{3}$O$_{10+\delta}$($\delta$ = 0.04 and -0.01) were determined under various pressures up to 124.9 GPa by electrical resistance measurements with a diamond anvil cell. $T_{\mathrm{c}}$ exhibits a strong dependence on oxygen content within the pressure range of approximately 20 GPa and 80 GPa. At 48.0 GPa, $T_{\mathrm{c}}$ of La$_{4}$Ni$_{3}$O$_{10.04}$ peaks at 36 K, marking the highest $T_{\mathrm{c}}$ reported thus far.
Topics & Concepts
DeltaSuperconductivityPhysicsCondensed matter physicsAstronomyHigh-pressure geophysics and materialsMagnetic and transport properties of perovskites and related materialsAdvanced Condensed Matter Physics