Triplet superconductivity and stripes? In (TMTSF)2PF6

I. J. Lee, S. E. Brown, W. G. Clark, W. Kang, M. J. Naughton, P. M. Chaikin

    Research output: Contribution to journalArticle

    Abstract

    We report on 77Se NMR studies of (TMTSF)2PF6 with field aligned along the a and b axes. We observe no change in the Knight shift on cooling well into the superconducting state, consistent with an equal spin paired triplet state. Nuclear spin lattice relaxation measurements show an increase just below Tc which we associate with a Hebel-Slichter (HS) peak and suggest P wave pairing that is nodeless. An additional study of the critical field as a function of pressure shows a strong enhancement as pressure is reduced toward the critical pressure, Pc, for spin density wave formation. We find that the superconducting Tc is not reduced as the SDW phase is entered. However, Hc2 is increased and there is a strong upward curvature of Hc2 along all axes as pressure is decreased toward Pc. We suggest that near Pc, there is a coexistence region consisting of stripes (slabs) of commingled SDW and superconducting regions and that the application of a magnetic field further finely divides the superconductor.

    Original languageEnglish (US)
    Pages (from-to)33-36
    Number of pages4
    JournalSynthetic Metals
    Volume133-134
    DOIs
    StatePublished - Mar 13 2003

    Fingerprint

    Superconductivity
    superconductivity
    nuclear magnetic resonance
    critical pressure
    Spin density waves
    P waves
    spin-lattice relaxation
    nuclear spin
    atomic energy levels
    Spin-lattice relaxation
    slabs
    curvature
    Superconducting materials
    cooling
    augmentation
    Nuclear magnetic resonance
    Magnetic fields
    Cooling
    magnetic fields

    Keywords

    • (TMTSF)PF
    • Critical fields
    • SDW
    • Superconductivity

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Materials Chemistry
    • Polymers and Plastics

    Cite this

    Lee, I. J., Brown, S. E., Clark, W. G., Kang, W., Naughton, M. J., & Chaikin, P. M. (2003). Triplet superconductivity and stripes? In (TMTSF)2PF6 . Synthetic Metals, 133-134, 33-36. https://doi.org/10.1016/S0379-6779(02)00419-8

    Triplet superconductivity and stripes? In (TMTSF)2PF6 . / Lee, I. J.; Brown, S. E.; Clark, W. G.; Kang, W.; Naughton, M. J.; Chaikin, P. M.

    In: Synthetic Metals, Vol. 133-134, 13.03.2003, p. 33-36.

    Research output: Contribution to journalArticle

    Lee, IJ, Brown, SE, Clark, WG, Kang, W, Naughton, MJ & Chaikin, PM 2003, 'Triplet superconductivity and stripes? In (TMTSF)2PF6 ', Synthetic Metals, vol. 133-134, pp. 33-36. https://doi.org/10.1016/S0379-6779(02)00419-8
    Lee IJ, Brown SE, Clark WG, Kang W, Naughton MJ, Chaikin PM. Triplet superconductivity and stripes? In (TMTSF)2PF6 . Synthetic Metals. 2003 Mar 13;133-134:33-36. https://doi.org/10.1016/S0379-6779(02)00419-8
    Lee, I. J. ; Brown, S. E. ; Clark, W. G. ; Kang, W. ; Naughton, M. J. ; Chaikin, P. M. / Triplet superconductivity and stripes? In (TMTSF)2PF6 . In: Synthetic Metals. 2003 ; Vol. 133-134. pp. 33-36.
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