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Microwave Properties of Ba(0.6)K(0.4)BiO(3) Crystals

S. Fricano·M. Bonura·A. Agliolo Gallitto·M. Li Vigni·L. A. Klinkova·N. V. Barkovskii
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Abstract

We report on field-induced variations of the microwave surface resistance at 9.6 GHz of Ba(0.6)K(0.4)BiO(3) crystals. Energy losses have been investigated as a function of the static magnetic field in the range of temperatures 4.2 K - Tc. By analyzing the experimental results in the framework of the Coffey and Clem model we determine the temperature dependence of the first-penetration field, upper critical field and depinning frequency. The results show that the pinning energy of this bismuthate superconductor is weaker than those of cuprates.

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S. Fricano, M. Bonura, A. Agliolo Gallitto, M. Li Vigni, L. A. Klinkova, N. V. Barkovskii. 2004-10-27. Microwave Properties of Ba(0.6)K(0.4)BiO(3) Crystals. https://doi.org/10.1140/epjb%2Fe2004-00323-6

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