Microwave properties of superconducting $MgB_{2}$

Details Microwave properties of superconducting $MgB_{2}$ Microwave properties of superconducting $MgB_{2}$

2001-03-20

arxiv.org/abs/cond-mat/0103422v1

Physics

Condensed Matter

Superconductivity

3 pages, 3 figures

Scientific paper

10.1063/1.1379366

Measurements of the $10GHz$ microwave surface resistance of dense $MgB_{2}$ 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 BCS s-wave superconductor . However the $R_{s}(20K)$ of the wire is an order of magnitude lower than that of polycrystal $YBa_{2}Cu_{3}O_{6.95}$ and matches with single crystal $YBa_{2}Cu_{3}O_{6.95}.$The results show promise for the use of $MgB_{2}$ in microwave applications.

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