Fluctuating spin density wave conduction in (TMTSF)2X organic superconductors

P. Auban-Senzier; C. R. Pasquier; D. Jérome; Klaus Bechgaard

Fluctuating spin density wave conduction in (TMTSF)2X organic superconductors

P. Auban-Senzier, C. R. Pasquier, D. Jérome, Klaus Bechgaard

Department of Chemistry

2 Citations (Scopus)

Abstract

Transport measurements along the least conducting direction of the organic superconductors (TMTSF)₂PF₆ and (TMTSF) ₂ClO₄ reveal a pronounced sublinear temperature dependence visible up to about four times the superconducting T_c either when pressure is close to the critical pressure for superconductivity in (TMTSF) ₂PF₆ or under ambient pressure in (TMTSF) ₂ClO₄ and ClO₄-ReO₄ solid solutions. Given the linear temperature dependence of the single-particle scattering in the metallic state derived from a previous investigation, the excess conduction insensitive to magnetic field but suppressed by lattice defects in the solid solution has been ascribed to sliding of fluctuating spin density waves in the vicinity of the antiferromagnetic order. This is the first observation of fluctuating spin density waves contributing to conduction.

Original language	English
Journal	EPL
Volume	94
Number of pages	6
ISSN	0295-5075
Publication status	Published - Apr 2011

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title = "Fluctuating spin density wave conduction in (TMTSF)2X organic superconductors",

abstract = "Transport measurements along the least conducting direction of the organic superconductors (TMTSF)2PF6 and (TMTSF) 2ClO4 reveal a pronounced sublinear temperature dependence visible up to about four times the superconducting Tc either when pressure is close to the critical pressure for superconductivity in (TMTSF) 2PF6 or under ambient pressure in (TMTSF) 2ClO4 and ClO4-ReO4 solid solutions. Given the linear temperature dependence of the single-particle scattering in the metallic state derived from a previous investigation, the excess conduction insensitive to magnetic field but suppressed by lattice defects in the solid solution has been ascribed to sliding of fluctuating spin density waves in the vicinity of the antiferromagnetic order. This is the first observation of fluctuating spin density waves contributing to conduction.",

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year = "2011",

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journal = "Lettere Al Nuovo Cimento",

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T1 - Fluctuating spin density wave conduction in (TMTSF)2X organic superconductors

AU - Auban-Senzier, P.

AU - Pasquier, C. R.

AU - Jérome, D.

AU - Bechgaard, Klaus

PY - 2011/4

Y1 - 2011/4

N2 - Transport measurements along the least conducting direction of the organic superconductors (TMTSF)2PF6 and (TMTSF) 2ClO4 reveal a pronounced sublinear temperature dependence visible up to about four times the superconducting Tc either when pressure is close to the critical pressure for superconductivity in (TMTSF) 2PF6 or under ambient pressure in (TMTSF) 2ClO4 and ClO4-ReO4 solid solutions. Given the linear temperature dependence of the single-particle scattering in the metallic state derived from a previous investigation, the excess conduction insensitive to magnetic field but suppressed by lattice defects in the solid solution has been ascribed to sliding of fluctuating spin density waves in the vicinity of the antiferromagnetic order. This is the first observation of fluctuating spin density waves contributing to conduction.

AB - Transport measurements along the least conducting direction of the organic superconductors (TMTSF)2PF6 and (TMTSF) 2ClO4 reveal a pronounced sublinear temperature dependence visible up to about four times the superconducting Tc either when pressure is close to the critical pressure for superconductivity in (TMTSF) 2PF6 or under ambient pressure in (TMTSF) 2ClO4 and ClO4-ReO4 solid solutions. Given the linear temperature dependence of the single-particle scattering in the metallic state derived from a previous investigation, the excess conduction insensitive to magnetic field but suppressed by lattice defects in the solid solution has been ascribed to sliding of fluctuating spin density waves in the vicinity of the antiferromagnetic order. This is the first observation of fluctuating spin density waves contributing to conduction.

M3 - Journal article

SN - 0295-5075

VL - 94

JO - Lettere Al Nuovo Cimento

JF - Lettere Al Nuovo Cimento

ER -

Fluctuating spin density wave conduction in (TMTSF)2X organic superconductors

Abstract

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