Microwave properties of superconducting MgB2

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Microwave properties of superconducting MgB2

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 YBa2Cu3...

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ژورنال

عنوان ژورنال: Applied Physics Letters

سال: 2001

ISSN: 0003-6951,1077-3118

DOI: 10.1063/1.1379366