Abstract
Abstract Heterostructures consisting of magnetic and superconducting layers juxtaposed to each other are ideal systems to investigate the interplay of the two order parameters and possible interlayer coupling. We used the low energy muon spin rotation technique to study magnetic field distributions at different implantation depths in tri-layered films composed of 75 nm thick YBa 2 Cu 3 O 7 - δ layers enclosing a 50 nm thick barrier layer of PrBa 2 Cu 3 O 7 - ɛ . The PrBa 2 Cu 3 O 7 - ɛ layer shows the known antiferromagnetic ordering of the Cu and Pr moments, whereas our measurements indicate the formation of a regular vortex lattice in the YBa 2 Cu 3 O 7 - δ layers if an external field is applied perpendicular to the film.
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