Upper critical field as a probe for multiband superconductivity in bulk and interfacial STO

Jonathan M. Edge; Alexander V. Balatsky

doi:10.1007/s10948-015-3052-3

Upper critical field as a probe for multiband superconductivity in bulk and interfacial STO

Superconductivity 2015-05-05 v3

Authors: Jonathan M. Edge , Alexander V. Balatsky

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Abstract

We investigate the temperature dependence of the upper critical field $H_{c 2}$ as a tool to probe the possible presence of multiband superconductivity at the interface of LAO/STO. The behaviour of $H_{c 2}$ can clearly indicate two-band superconductivity through its nontrivial temperature dependence. For the disorder scattering dominated two-dimensional LAO/STO interface we find a characteristic non-monotonic curvature of the $H_{c 2} (T)$ . We also analyse the $H_{c 2}$ for multiband bulk STO and find similar behaviour.

Keywords

upper critical field multiband superconductivity LAO/STO interface two-band superconductivity disorder scattering

Cite

@article{arxiv.1401.5318,
  title  = {Upper critical field as a probe for multiband superconductivity in bulk and interfacial STO},
  author = {Jonathan M. Edge and Alexander V. Balatsky},
  journal= {arXiv preprint arXiv:1401.5318},
  year   = {2015}
}

Comments

17 pages, 10 figures

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