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

A. G. Lebed

doi:10.1016/j.physb.2012.01.034

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

A. G. Lebed

Physics

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

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 language	English (US)
Pages (from-to)	1803-1805
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	407
Issue number	11
DOIs	https://doi.org/10.1016/j.physb.2012.01.034
State	Published - Jun 1 2012

Keywords

Organic superconductor
Upper critical magnetic field

ASJC Scopus subject areas

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

Access to Document

10.1016/j.physb.2012.01.034

Cite this

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

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.",

keywords = "Organic superconductor, Upper critical magnetic field",

author = "Lebed, {A. G.}",

note = "Funding Information: We are thankful to N.N. Bagmet, S.E. Brown, and Y. Maeno for useful discussions. This work was supported by the NSF under Grants No DMR-0705986 and DMR-1104512 .",

year = "2012",

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doi = "10.1016/j.physb.2012.01.034",

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AU - Lebed, A. G.

N1 - Funding Information: We are thankful to N.N. Bagmet, S.E. Brown, and Y. Maeno for useful discussions. This work was supported by the NSF under Grants No DMR-0705986 and DMR-1104512 .

PY - 2012/6/1

Y1 - 2012/6/1

N2 - 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.

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.

KW - Organic superconductor

KW - Upper critical magnetic field

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