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Evidence of room temperature charge-density wave behavior and glass-like states in pressed pellets of lightly doped poly (3-methyl thiophene)
(Taylor & Francis Ltd, 2002-01-01)
We show room temperature charge-density wave (CDW) characteristics in d.c. and a.c. electric data in pressed pellets of lightly doped poly(3-methylthiophene). The possibility of a Peierls glass is discussed and metastables ...
Field-dependent conductivity at low electric fields in pressed pellets of doped poly (3-methylthiophene): evidence of charge-density wave depinning
(Elsevier B.V., 2003-04-01)
Field-dependent conductivity at low electric fields was observed from low to room temperature in pressed pellets of doped poly(3-methylthiophene). The room temperature data showed good agreement with Bardeen's theory of ...
Determination of density of states in PPS from space-charge-limited current measurements
(1997-01-01)
Space-charge-limited currents measurements have been carried out on undoped amorphous poly p-phenylene sulfide. The scaling law is checked for different samples with varying thickness, and J-V data analyzed. The position ...
Electronic densities in systems with fractionally charged nuclei: a symmetry breaking study
(Springer, 2015-01)
This work reports an extension of the recent study on changes of electronic structures in systems possessing nuclei with fractional charges (Cohen and MoriSánchez in J Chem Phys 140:044110, 2014). Using the simple Hückel ...
Topological analysis of the electronic charge density in the ethene protonation reaction catalyzed by acidic zeolite
(American Chemical Society, 2007-08)
In the present work, the distribution of the electronic charge density in the ethene protonation reaction by a zeolite acid site is studied within the framework of the density functional theory and the atoms in molecules ...
Non-linear conduction due to depinning of charge order domains in Fe3O2BO3
(2017-04-10)
The oxyborate Fe3O2BO3 presents a charge density wave (CDW) transition close to room temperature. As we show here, this is associated with a well defined anomaly in the specific heat. Below this transition, when applying ...
Adsorption of polyelectrolytes onto oppositely charged cylindrical macroions
(2013-06-28)
In this work we investigate the adsorption of polyelectrolyte chains onto uniformly charged cylindrical macroions by means of the Metropolis Monte Carlo simulations and weighted histogram analysis method. Adopting a ...
Charge density alterations in human hair fibers: An investigation using electrostatic force microscopy
(2006-04-01)
A new method for high-resolution analyses of hair surface charge density under ambient conditions is presented in this paper. Electrostatic force microscopy (EFM) is used here to analyze changes in surface charge density ...
Nanotubes for charge storage - Towards an atomistic model
(Pergamon-Elsevier Science Ltd, 2015-04)
We examine the insertion of alkali and halide ions into narrow nanotubes of graphite and gold by density functional theory (DFT). For tubes with diameters less than about 10 Åthe optimum position of the ion is in the center ...
Some Electronic Correlation Effects in the Topological Analysis of the Laplacian of the Electronic Charge Density in C-n-Butonium Cations
(American Chemical Society, 2005-01)
In this work, we present a topological study of the Laplacian of the electronic density using a 6-311++G** basis set, at Hartree-Fock (HF) and second-order Møller-Plesset (MP2) (full-electron and frozen-core) levels of ...