Microwave properties of superconducting MgB2
نویسندگان
چکیده
Measurements of 10 GHz microwave surface resistance, Rs , of dense MgB2 wire and pellet are reported. Significant improvements are observed in the wire with reduction of porosity. The data lie substantially above the theoretical estimates for a pure Bardeen–Cooper–Schrieffer s-wave superconductor. However, the Rs ~20 K! of the wire is an order of magnitude lower than that of polycrystal YBa2Cu3O6.95 and matches with single-crystal YBa2Cu3O6.95 . The results show promise for the use of MgB2 in microwave applications. © 2001 American Institute of Physics. @DOI: 10.1063/1.1379366#
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