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

doi:10.1140/epjb/e2004-00323-6

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

Superconductivity 2007-05-23 v2

Authors: 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.

Keywords

microwave surface resistance Ba(0.6)K(0.4)BiO(3) Coffey-Clem model first-penetration field upper critical field depinning frequency pinning energy

Cite

@article{arxiv.cond-mat/0405140,
  title  = {Microwave Properties of Ba(0.6)K(0.4)BiO(3) Crystals},
  author = {S. Fricano and M. Bonura and A. Agliolo Gallitto and M. Li Vigni and L. A. Klinkova and N. V. Barkovskii},
  journal= {arXiv preprint arXiv:cond-mat/0405140},
  year   = {2007}
}

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6 pages, 8 embedded figures

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

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