Large intrinsic effect of axial strain on the critical current of high-temperature superconductors for electric power applications
Daniel C. van der Laan, John (Jack) W. Ekin
A remarkably large reversible reduction in the critical current of "second generation" high-temperature superconductors for electric power applications has been measured with a new technique over a wide range of mechanical strain. The effect amounts to a 40% reduction in critical current at 1% compressive strain in self-magnetic field, and is symmetric for compressive and tensile strains. The intrinsic effect is measured in highly aligned multigranular YBa2Cu3O7-d coated conductors made by different processes, including superconductors with nanoscale pinning centers. This effect and its magnitude are expected to have a significant impact on power applications and provide a useful new parameter for probing the fundamental nature of current transport in high-temperature superconductors.
van der Laan, D.
and Ekin, J.
Large intrinsic effect of axial strain on the critical current of high-temperature superconductors for electric power applications, Applied Physics Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=32463
(Accessed December 5, 2023)