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

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P. Vorderwisch S. Wakimoto

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classification ❄️ cond-mat.str-el cond-mat.supr-con

keywords magneticorderstage-4stage-6fieldla2cuolong-rangemeasured

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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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Effect of a magnetic field on long-range magnetic order in stage-4 and stage-6 superconducting La2CuO(4+y)

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