Effect of a magnetic field on long-range magnetic order in stage-4 and stage-6 superconducting La2CuO4+y

B. Khaykovich; R. J. Birgeneau; F. C. Chou; R. W. Erwin; M. A. Kastner; S.-H. Lee; Y. S. Lee; P. Smeibidl; P. Vorderwisch; S. Wakimoto

doi:10.1103/PhysRevB.67.054501

Effect of a magnetic field on long-range magnetic order in stage-4 and stage-6 superconducting La2CuO4+y

B. Khaykovich, R. J. Birgeneau, F. C. Chou, R. W. Erwin, M. A. Kastner, S.-H. Lee, Y. S. Lee, P. Smeibidl, P. Vorderwisch, S. Wakimoto

DOI 10.1103/PhysRevB.67.054501 · Physical Review B

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Abstract

We have measured the enhancement of the static incommensurate spin-density wave (SDW) order by an applied magnetic field in stage-4 and stage-6 samples of superconducting La2CuO4+y. We show that the stage-6 La2CuO4+y (Tc=32K) forms static long-range SDW order with the same wave vector as that in the previously studied stage-4 material. We have measured the field dependence of the SDW magnetic Bragg peaks in both stage-4 and stage-6 materials at fields up to 14.5 T. A recent model of competing SDW order and superconductivity describes these data well.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
La2CuO4+y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	32	Pressure not reported	onset
La2CuO4+y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	42	Pressure not reported	onset