Hidden reentrant and Larkin-Ovchinnikov-Fulde-Ferrell superconducting phases in a magnetic field in a (TMTSF)2ClO4

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Abstract

We solve a long-standing problem about a theoretical description of the upper critical magnetic field, parallel to conducting layers and perpendicular to conducting chains, in a (TMTSF)2ClO4 superconductor. In particular, we explain why the experimental upper critical field, Hc2b 6T, is higher than both the quasiclassical upper critical field and the Clogston paramagnetic limit. We show that this property is due to the coexistence of the hidden reentrant and Larkin-Ovchinnikov-Fulde-Ferrell phases in a magnetic field in the form of three plane waves with nonzero momenta of the Cooper pairs. Our results are in good qualitative and quantitative agreement with the recent experimental measurements of Hc2b and support a singlet d-wave-like scenario of superconductivity in (TMTSF) 2ClO4.

Original languageEnglish (US)
Article number087004
JournalPhysical Review Letters
Volume107
Issue number8
DOIs
Publication statusPublished - Aug 19 2011

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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