Microwave surface resistance in superconductors with grain boundaries

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dc.creatorMawatari, Yasunori
dc.date2005-01-11
dc.date.accessioned2026-07-07T03:03:09Z
dc.date.available2026-07-07T03:03:09Z
dc.descriptionMicrowave-field distribution, dissipation, and surface impedance are theoretically investigated for superconductors with laminar grain boundaries (GBs). In the present theory we adopt the two-fluid model for intragrain transport current in the grains, and the Josephson-junction model for intergrain tunneling current across GBs. Results show that the surface resistance $R_s$ nonmonotonically depends on the critical current density $J_{cj}$ at GB junctions, and $R_s$ for superconductors with GBs can be smaller than the surface resistance $R_{s0}$ for ideal homogeneous superconductors without GBs.
dc.description6 pages, 1 figure, accepted for publication in Phys. Rev. B
dc.identifierhttps://arxiv.org/abs/cond-mat/0501225
dc.identifierhttp://arxiv.org/abs/cond-mat/0501225
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/25650
dc.subjectSuperconductivity
dc.titleMicrowave surface resistance in superconductors with grain boundaries
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