Link between antiferromagnetism and superconductivity probed by nuclear spin relaxation in organic conductors

Abstract

The interdependence of antiferromagnetism and superconductivity in the Bechgaard salts series of organic conductors is examined in the light of the anomalous temperature dependence of the nuclear spin-lattice relaxation rate. We apply the renormalization group approach to the electron gas model to show that the crossover from antiferromagnetism to superconductivity along with the anomalous nuclear relaxation rate of the Bechgaard salts can be well described within a unified microscopic framework. For sizable nesting deviations of the Fermi surface, scaling theory reveals how pairing correlations enhance short-range antiferromagnetic correlations via magnetic Umklapp scattering over a large part of the metallic phase that precedes superconductivity. These enhanced magnetic correlations are responsible for the Curie-Weiss behavior observed in the NMR relaxation rate.

10 pages, 5 figures

References in corpus (5)

• Charge gap in the one--dimensional dimerized Hubbard model at quarter-filling
• Interplay between spin-density-wave and superconducting states in quasi-one-dimensional conductors
• Superconducting pairing and density-wave instabilities in quasi-one-dimensional conductors
• Role of Interchain Hopping in the Magnetic Susceptibility of Quasi-One-Dimensional Electron Systems
• Effect of Inter-Site Repulsions on Magnetic Susceptibility of One-Dimensional Electron Systems at Quarter-Filling

Cited by in corpus (30)

• Scattering and Pairing in Cuprate Superconductors
• Unconventional Superconductivity
• Correlation between linear resistivity and $T_c$ in the Bechgaard salts and the pnictide superconductor Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$
• Strong coupling superconductivity, pseudogap and Mott transition
• Universal scaling of the critical temperature and the strange-metal scattering rate in unconventional superconductors
• Pairing dynamics in strongly correlated superconductivity
• Quantum critical point for stripe order: An organizing principle of cuprate superconductivity
• Extended quantum criticality of low-dimensional superconductors near a spin-density-wave instability
• Breakdown of Fermi liquid behavior at the (π,π)=2k_F spin-density wave quantum-critical point: the case of electron-doped cuprates
• Organic Superconductors: when correlations and magnetism walk in
• Hidden Reentrant and Larkin-Ovchinnikov-Fulde-Ferrell Superconducting Phases in a Magnetic Field in (TMTSF)${}_2$ClO${}_4$
• Linear-T scattering and pairing from antiferromagnetic fluctuations in the (TMTSF)_2X organic superconductors
• Nonperturbative renormalization-group approach to fermion systems in the two-particle-irreducible effective action formalism
• Novel superconducting phenomena in quasi-one-dimensional Bechgaard salts
• Quasi one-dimensional organic conductors: from Fröhlich conductivity and Peierls insulating state to magnetically-mediated superconductivity, a retrospective
• The metallic transport of (TMTSF)_2X organic conductors close to the superconducting phase
• Superconductivity and antiferromagnetism as interfering orders in organic conductors
• The Seebeck coefficient in correlated low dimensional organic metals
• On the Origin of the Anomalous Upper Critical Field in Quasi-One-Dimensional Superconductors
• Quantum Limit in a Magnetic Field for Triplet Superconductivity in a Quasi-One-Dimensional Conductor
• Disorder effects on hot spots in electron-doped cuprates
• Possible restoration of superconductivity in the quasi-one-dimensional conductor Li${}_{0.9}$Mo${}_6$O${}_{17}$ in feasibly high pulsed magnetic fields, $H\simeq 100T$
• Superconductivity close to the charge-density-wave instability
• Electrical transport near quantum criticality in low dimensional organic superconductors
• Role of electron-phonon interaction in a magnetically driven mechanism for superconductivity
• Towards a consistent picture for quasi-1D organic superconductors
• Superconducting and density-wave instabilities of low dimensional conductors with a Zeeman coupling to a magnetic field
• Influence of carrier lifetime on quantum criticality and superconducting Tc of (TMTSF)_2ClO_4
• Superconducting and spin-density wave phases probed by scanning tunneling spectroscopy in the organic conductor $(\mathrm{TMTSF}{)}_2\mathrm{Cl}{\mathrm{O}}_4$
• Link between spin fluctuations and Cooper pairing in copper oxide superconductors