Effects of Ni-to-Cu substitution on the properties of the high-Tcsuperconductor La1.85Sr0.15CuO4−y

W. Kang; H. Schulz; D. Jérome; S. S. P. Parkin; J. M. Bassat; Ph. Odier

doi:10.1103/PhysRevB.37.5132

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Effects of Ni-to-Cu substitution on the properties of the high-Tcsuperconductor La1.85Sr0.15CuO4−y

W. Kang, H. Schulz, D. Jérome, S. S. P. Parkin, J. M. Bassat, Ph. Odier

DOI 10.1103/PhysRevB.37.5132 · Physical Review B

T1

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Abstract

We report experimental data about the influence of Ni substitution on the properties of the high-Tc superconductor La1.85Sr0.15Cu1−xNixO4−y, 0≤x≤0.05. Superconductivity is totally suppressed above x=0.04 and the Curie law observed at x=0.05 reveals an effective magnetic moment of 0.7μB instead of √3 μB as for spin (1/2. This result is explained by the existence of a singly &) level. Possibilities for non-s-wave superconductivity are also discussed in conjunction with our experimental data.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
La1.85Sr0.15CuO4-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	38	Pressure not reported	onset
La1.85Sr0.15Cu1-xNixO4-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
La1.85Sr0.15Cu1-xNixO4-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown