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Effect of a magnetic field on long-range magnetic order in stage-4 and stage-6 superconducting La2CuO(4+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
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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 La2CuO(4+y). We show that the stage-6 La2CuO(4+y) (Tc=32 K) 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.

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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. 2003-02-06. Effect of a magnetic field on long-range magnetic order in stage-4 and stage-6 superconducting La2CuO(4+y). https://doi.org/10.1103/physrevb.67.054501

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