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2001•Physical review. B, Condensed matterOpen access

Spin-tripletf-wave-like pairing proposed for an organic superconductor (TMTSF)2PF6

Kazuhiko Kuroki, Ryotaro Arita, Hideo Aoki

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Abstract

By examining how the spin- and/or charge-fluctuation exchange can contribute to pairing instabilities, we propose that a spin-triplet f-wave-like pairing with a d-vector perpendicular to the b-axis may be realized in $(\mathrm{TMTSF}{)}_{2}{\mathrm{PF}}_{6}$ due to (i) a quasi-one-dimensional Fermi surface, (ii) a coexistence of ${2k}_{F}$ charge fluctuations and spin fluctuations, and (iii) an anisotropy in spin fluctuations. Fluctuation-exchange study for the Hubbard model confirms the point (i), while a phenomenological analysis is given for (ii) and (iii). The proposed pairing is consistent with various experiments.

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What this paper is about

By examining how the spin- and/or charge-fluctuation exchange can contribute to pairing instabilities, we propose that a spin-triplet f-wave-like pairing with a d-vector perpendicular to the b-axis may be realized in $(\mathrm{TMTSF}{)}_{2}{\mathrm{PF}}_{6}$ due to (i) a quasi-one-dimensional Fermi surface, (ii) a coexistence of ${2k}_{F}$ charge fluctuations and spin fluctuations, and (iii) an anisotropy in spin fluctuations. Fluctuation-exchange study for the Hubbard model confirms the point (i), while a phenomenological analysis is given for (ii) and (iii). The proposed pairing is consistent with various experiments.

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Available abstract

By examining how the spin- and/or charge-fluctuation exchange can contribute to pairing instabilities, we propose that a spin-triplet f-wave-like pairing with a d-vector perpendicular to the b-axis may be realized in $(\mathrm{TMTSF}{)}_{2}{\mathrm{PF}}_{6}$ due to (i) a quasi-one-dimensional Fermi surface, (ii) a coexistence of ${2k}_{F}$ charge fluctuations and spin fluctuations, and (iii) an anisotropy in spin fluctuations. Fluctuation-exchange study for the Hubbard model confirms the point (i), while a phenomenological analysis is given for (ii) and (iii). The proposed pairing is consistent with various experiments.

Key concepts: Pairing, Spin (aerodynamics), Physics, Superconductivity, Quantum mechanics, Thermodynamics

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Spin-tripletf-wave-like pairing proposed for an organic superconductor (TMTSF)2PF6 — Research Paper | ScholarLens