Super-hard Superconductivity

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dc.creatorYoung, D. P.
dc.creatorModovan, M.
dc.creatorProzorov, R.
dc.creatorAdams, P. W.
dc.date2004-10-10
dc.date2004-10-13
dc.date.accessioned2026-07-07T06:30:05Z
dc.date.available2026-07-07T06:30:05Z
dc.descriptionWe present a study of the magnetic response of Type-II superconductivity in the extreme pinning limit, where screening currents within an order of magnitude of the Ginzburg-Landau depairing critical current density develop upon the application of a magnetic field. We show that this "super-hard" limit is well approximated in highly disordered, cold drawn, Nb and V wires whose magnetization response is characterized by a cascade of Meissner-like phases, each terminated by a catastrophic collapse of the magnetization. Direct magneto-optic measurements of the flux penetration depth in the virgin magnetization branch are in excellent agreement with the exponential model in which J_c(B)=J_co exp(-B/B_o), where J_co~5x10^6 A/cm^2 for Nb. The implications for the fundamental limiting hardness of a superconductor are discussed.
dc.descriptioncorrected Fig. 1
dc.identifierhttps://arxiv.org/abs/cond-mat/0410238
dc.identifierhttp://arxiv.org/abs/cond-mat/0410238
dc.identifierSupercond. Sci. Technol. 18 (5), 776-779 (2005)
dc.identifierdoi:10.1088/0953-2048/18/5/034
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/98257
dc.subjectSuperconductivity
dc.titleSuper-hard Superconductivity
dc.typetext

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