On the origin of the anomalous upper critical field in quasi–one-dimensional superconductors

  title={On the origin of the anomalous upper critical field in quasi–one-dimensional superconductors},
  author={Yuki Fuseya and Claude Bourbonnais and Kazumasa Miyake},
The upper critical field, Hc2, in quasi-1D superconductors is investigated by the weak coupling renormalization group technique. It is shown that Hc2 greatly exceeds not only the Pauli limit, but also the conventional paramagnetic limit of the Flude-Ferrell-Larkin-Ovchinnikov (FFLO) state. This increase is mainly due to the quasi-1D fluctuations effect as triggered by interference between unconventional superconductivity and density-wave instabilities. Our results give a novel viewpoint on the… 
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  • A. Ptok
  • Physics, Medicine
    Journal of physics. Condensed matter : an Institute of Physics journal
  • 2017
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