Identifying magnetic field-reentrant superconductivity at both overdoped and underdoped region at the boarders of nickelate superconducting dome. (IMAGE)

Science China Press

Identifying magnetic field-reentrant superconductivity at both overdoped and underdoped region at the boarders of nickelate superconducting dome.

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(a) Temperature-dependent resistivity of optimally doped Nd0.55Eu0.45NiO2 and underdoped and overdoped Nd1-xEuxNiO2 films. The insets show that the optimal composition retains conventional superconductivity, whereas the two boundary compositions recover zero resistance in a finite magnetic-field window. (b-c) Superconducting phase diagrams for Nd1-xEuxNiO2 and Pr1-xEuxNiO2. Blue marks the robust high-Tc region without reentrance; orange marks the boundary regions where field-reentrant superconductivity appears.

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