Spin density wave and superconducting properties of nanoparticle organic conductor assemblies

Triplet superconducting pairing and density-wave instabilities in organic conductors.

Using a renormalization group approach, we determine the phase diagram of an extended quasi-one-dimensional electron gas model that includes interchain hopping, nesting deviations, and both intrachain and interchain repulsive interactions. We find a close proximity of spin-density- and charge-density-wave phases and singlet d-wave and triplet f-wave superconducting phases. There is a striking c...

Interplay of the spin-density-wave state and magnetic field in the organic conductor alpha -(BEDT-TTF)2KHg(SCN)4.

Quantum critical properties of a metallic spin-density-wave transition

We report on numerically exact determinantal quantum Monte Carlo simulations of the onset of spin-densitywave (SDW) order in itinerant electron systems captured by a sign-problem-free two-dimensional lattice model. Extensive measurements of the SDW correlations in the vicinity of the phase transition reveal that the critical dynamics of the bosonic order parameter are well described by a dynami...

Nanowires and nanoribbons of charge-density-wave conductor NbSe3.

We report synthesis of nanowires and nanoribbons of the charge-density-wave conductor NbSe(3) through direct reaction of Nb and Se powders. The transverse dimension of the obtained nanostructures, as identified with scanning/transmission electron microscopy, ranges from 20 to 700 nm. X-ray and selected area electron diffraction analyses indicate that these nanowires and nanoribbons are single c...

Pulsed Esr Investigation of Spin Transport Properties in the Organic Conductor

Spin transport properties in the organic conductor (perylenyls)+ Xwere studied in the temperature ran e of 4-300 K. Being constant in the Q -1 “metallic” range (01, = 1.8(2) cm s , the diffusion constant Dl, exhibits a temperature activated behaviour in the low temperature range, at variance with the prediction invoking the model of an intrinsic semiconductor. A low-temperature divergence of th...