Upper critical fields of MgB2 thin films

V. Ferrando; C. Bernini; P. Manfrinetti; D. Marre'; M. Putti; C. Tarantini; C. Ferdeghini

doi:10.1016/j.physc.2004.02.059

Upper critical fields of MgB2 thin films

Superconductivity 2009-11-10 v1

Authors: V. Ferrando , C. Bernini , P. Manfrinetti , D. Marre' , M. Putti , C. Tarantini , C. Ferdeghini

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Abstract

Critical fields of four MgB2 thin films with a normal state resistivity ranging from 5 to 50 mWcm and Tc from 29.5 to 38.8 K were measured up to 28 T. Hc2(T) curves present a linear behavior towards low temperatures. Very high critical field values have been found, up to 24 T along the c-axis and 57 T in the basal plane not depending on the normal state resistivity values. In this paper, critical fields will be analyzed taking into account the multiband nature of MgB2; we will show that resistivity and upper critical fields can be ascribed to different scattering mechanisms.

Keywords

mgb2 superconductivity

Cite

@article{arxiv.cond-mat/0304478,
  title  = {Upper critical fields of MgB2 thin films},
  author = {V. Ferrando and C. Bernini and P. Manfrinetti and D. Marre' and M. Putti and C. Tarantini and C. Ferdeghini},
  journal= {arXiv preprint arXiv:cond-mat/0304478},
  year   = {2009}
}

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8 pages, 2 figures, submitted to Physica C (M2S-Rio proceedings)

Upper critical fields of MgB2 thin films

Abstract

Keywords

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