Abstract
Abstract We investigated the superconductivity of V/Cr-multilayers grown epitaxially on MgO(001) and Al2O3(1120) plate. The preferred orientation of V/Cr is (001) and (110) for MgO and Al2O3, respectively. Thickness of V-layer is fixed at d v =300 A and that of Cr-layer is varied from 20 to 80A. Critical temperatures of (001)V/Cr are lower than those of (110)V/Cr. Dimensional crossover in the parallel critical fields Hc2|(T) is observed for d Cr =20–60 A V/Cr on Al2O3 and d Cr =20 A V/Cr on MgO. Stronger anisotropy of Hc2| in 2D region is shown in the samples grown on MgO.
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