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Figure 1
Schematic of the scattering geometry. The applied magnetic field Bapp is aligned parallel to the incoming neutron beam. The scattered neutrons are recorded using a position-sensitive 2D detector placed behind the sample. The two FLL vectors ai, the interplanar FLL distance dFLL, the FLL domain size d and the Meissner state domain size m are marked by arrows in the zoomed-in schematics of the insets. A schematic drawing of the magnetic field distribution B(r) along the direction of a1 is also included. The magnetic scattering length density contrast Δρ is determined by the difference in magnetic field between mixed state domains (internal magnetic field Bint) and Meissner state domains (zero internal field) and connected to the IMS scattering. The FLL form factor amplitude FFLL connected to the Bragg peak scattering results from the close to sinusoidal field variation inside the mixed state domains. |