Critical current density of strained multilayer thin films of Nd 1.83Ce0.17CuOx/YBa2Cu 3O7-δ

R. Gross, A. Gupta, E. Olsson, A. Segmüller, G. Koren

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Abstract

The superconducting transport properties of strained multilayer thin films of YBa2Cu3O7-δ/Nd1.83Ce 0.17CuOx, grown heteroepitaxially by laser ablation deposition, are reported. For individual layer thicknesses below a critical layer thickness of about 250 Å, coherency strain removes the orthorhombic distortion in the YBa2Cu3O7-δ layers and makes them twin-free. Zero-field critical current densities as high as 1.1×107 A/cm2 at 77 K have been measured for the YBa2Cu3O7-δ layers. Flux pinning energies at zero temperature and zero magnetic field in the range of 80-140 meV have been found.

Original languageEnglish
Pages (from-to)203-205
Number of pages3
JournalApplied Physics Letters
Volume57
Issue number2
DOIs
StatePublished - 1990
Externally publishedYes

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