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Pressure-induced superconductivity in La$_{4}$Ni$_{3}$O$_{10+\delta}$ ($\delta$ = 0.04 and -0.01)
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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.
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Cited by 1 Pith paper
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Low volume fraction of high-Tc superconductivity in La3Ni2O7 at 80 K and ambient pressure
Oxygen annealing of La3Ni2O7 single crystals produces a 0.1-0.2% volume-fraction diamagnetic signal at 80 K and ambient pressure, attributed to filamentary superconductivity.
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