Magnetism and Superconductivity in Nd 0.81 Sr 0.19 MnO 3 /YBa 2 Cu 3 O 7 Superlattices
I. Komissarov. P. Przysłupski, P. Dłużewski and M. Sawicki
Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland
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We report on the growth, structural and magnetic characterization of Nd 0.81 Sr 0.19 MnO 3 /YBa>dwi{2}>Cu 3 O 7 (NSMO/YBCO) superlattices. The NSMO system for the doping level of x=0.19 is a ferromagnetic insulator. Multilayers with a fixed NSMO thickness of 13 unit cells and a varying YBCO layer thickness from 2 unit cells to 6 unit cells were sputtered on LaAlO 3 substrates. An onset of superconducting transition is seen starting from the multilayer with 3 unit cells of YBCO layer thickness. Hysteresis loops recorded above and below the superconducting transition show a signature of interlayer exchange coupling.
DOI: 10.12693/APhysPolA.105.127
PACS numbers: 74.25.Ha, 74.78.Fk, 75.70.Cn