Local Magnetic Order vs Superconductivity in a Layered Cuprate

N. Ichikawa; S. Uchida; J. M. Tranquada; T. Niemöller; P. M. Gehring; S.-H. Lee; J. R. Schneider

doi:10.1103/PhysRevLett.85.1738

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Local Magnetic Order vs Superconductivity in a Layered Cuprate

N. Ichikawa, S. Uchida, J. M. Tranquada, T. Niemöller, P. M. Gehring, S.-H. Lee, J. R. Schneider

DOI 10.1103/PhysRevLett.85.1738 · Physical Review Letters

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Abstract

We report on the phase diagram for charge-stripe order in La1.6−xNd0.4SrxCuO4, determined by neutron and x-ray scattering studies and resistivity measurements. From an analysis of the in-plane resistivity motivated by recent nuclear-quadrupole-resonance studies, we conclude that the transition temperature for local charge ordering decreases monotonically with x, and hence that local antiferromagnetic order is uniquely correlated with the anomalous depression of superconductivity at x≈18. This result is consistent with theories in which superconductivity depends on the existence of charge-stripe correlations.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
La1.6-xNd0.4SrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown