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A reconstruction from small-angle neutron scattering measurements of the real space magnetic field distribution in the mixed state of Sr$_2$RuO$_4$

P. G. Kealey·T. M. Riseman·E. M. Forgan·L. M. Galvin·A. P. Mackenzie·S. L. Lee·D. McK. Paul·R. Cubitt·D. F. Agterberg·R. Heeb·Z. Q. Mao·Y. Maeno
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Abstract

We have measured the diffracted neutron scattering intensities from the square magnetic flux lattice in the perovskite superconductor Sr$_2$RuO$_4$, which is thought to exhibit p-wave pairing with a two-component order parameter. The relative intensities of different Bragg reflections over a wide range of field and temperature have been shown to be inconsistent with a single component Ginzburg-Landau theory but qualitatively agree with a two component p-wave Ginzburg-Landau theory.

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P. G. Kealey, T. M. Riseman, E. M. Forgan, L. M. Galvin, A. P. Mackenzie, S. L. Lee, D. McK. Paul, R. Cubitt, D. F. Agterberg, R. Heeb, Z. Q. Mao, Y. Maeno. 2000-02-08. A reconstruction from small-angle neutron scattering measurements of the real space magnetic field distribution in the mixed state of Sr$_2$RuO$_4$. https://doi.org/10.1103/physrevlett.84.6094

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