D-Wave-like nodal superconductivity in the organic conductor (TMTSF) 2ClO 4

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We suggest theoretical explanation of the high upper critical magnetic field, perpendicular to conducting chains, Hc2 b′, experimentally observed in the superconductor (TMTSF) 2ClO 4, in terms of singlet superconducting pairing. In particular, we compare the results of d-wave-like nodal, d-wave-like node-less, and s-wave scenarios of superconductivity. We show that, in d-wave-like nodal scenario, superconductivity can naturally exceed both the orbital upper critical magnetic field and Clogston-Shandrasekhar paramagnetic limit as well as reach experimental value, Hc2 b′≃6T, in contrast to d-wave-like node-less and s-wave scenarios. In our opinion, the obtained results are strongly in favor of d-wave-like nodal superconductivity in (TMTSF) 2ClO 4, whereas, in a sister compound, (TMTSF) 2PF 6, we expect either the existence of triplet order parameter or the coexistence of triplet and singlet order parameters.

Original languageEnglish (US)
Pages (from-to)1803-1805
Number of pages3
JournalPhysica B: Condensed Matter
Volume407
Issue number11
DOIs
StatePublished - Jun 1 2012

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Organic conductors
Superconductivity
superconductivity
conductors
Magnetic fields
magnetic fields
Superconducting materials
conduction
orbitals

Keywords

  • Organic superconductor
  • Upper critical magnetic field

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

D-Wave-like nodal superconductivity in the organic conductor (TMTSF) 2ClO 4 . / Lebed, Andrei G.

In: Physica B: Condensed Matter, Vol. 407, No. 11, 01.06.2012, p. 1803-1805.

Research output: Contribution to journalArticle

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AB - We suggest theoretical explanation of the high upper critical magnetic field, perpendicular to conducting chains, Hc2 b′, experimentally observed in the superconductor (TMTSF) 2ClO 4, in terms of singlet superconducting pairing. In particular, we compare the results of d-wave-like nodal, d-wave-like node-less, and s-wave scenarios of superconductivity. We show that, in d-wave-like nodal scenario, superconductivity can naturally exceed both the orbital upper critical magnetic field and Clogston-Shandrasekhar paramagnetic limit as well as reach experimental value, Hc2 b′≃6T, in contrast to d-wave-like node-less and s-wave scenarios. In our opinion, the obtained results are strongly in favor of d-wave-like nodal superconductivity in (TMTSF) 2ClO 4, whereas, in a sister compound, (TMTSF) 2PF 6, we expect either the existence of triplet order parameter or the coexistence of triplet and singlet order parameters.

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