Topic
Bipolaron
About: Bipolaron is a research topic. Over the lifetime, 1335 publications have been published within this topic receiving 29154 citations. The topic is also known as: bipolarons.
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TL;DR: In this article, a metal free flexible p-type semiconductor in a hybrid structure of paper/graphite/polyaniline has been prepared in a facile technique of vapor phase oxidation of aniline on graphite incorporated paper.
15 citations
TL;DR: In this paper, the density functional theory of polarons and bipolarons in a polar liquid is presented, and the free energy functional of the system in which the electrons are treated within the Kohn-Sham formalism, while the solvent via the integral equations theory.
Abstract: The density functional theory of polarons and bipolarons in a polar liquid is presented. Starting from the grand partition function, we have developed a microscopic model and derived the free-energy functional of the system in which the electrons are treated within the Kohn-Sham formalism, while the solvent via the integral equations theory. The case of our approach concerns with the free-energy functional corresponding to the mean spherical approximation and the extended point dipole model. We have calculated different properties for a polaron and a singlet bipolaron formation and their variations caused by changes in temperature, density, and polarity of the solvent. The obtained results are in agreement with available experimental data and simulations.
15 citations
TL;DR: In this article, the dielectric relaxation in SrTiO3, K0.989Li 0.011TaO3 was analyzed and it was shown that such a behavior is a consequence of the dynamic properties of bipolarons, which undergo a transition from thermally activated hopping to a tunneling regime.
Abstract: The dielectric relaxation in SrTiO3, Sr0.942Ca0.058TiO3, and K0.989Li0.011TaO3 was analyzed. While at higher temperatures the characteristic relaxation frequency follows the Arrhenius behavior, its value is temperature independent at low temperatures. It is shown that such a behavior is a consequence of the dynamic properties of bipolarons, which undergo a transition from thermally activated hopping to a tunneling regime.
15 citations
TL;DR: The long-range transport of polaron/bipolaron under high electric field at low temperature is the field-facilitated sequential tunneling through spatial-disordered potential barriers via multiple intrastrand and interstrand pathways.
Abstract: We investigate the pathways of polaron and bipolaron transports in DNA double strands with an extended Su-Schrieffer-Heeger model involving the effects of solvent polarization. We find that the long-range transport of polaron/bipolaron under high electric field at low temperature is the field-facilitated sequential tunneling through spatial-disordered potential barriers via multiple intrastrand and interstrand pathways. Although the interstrand pathways may be very active and effective in some DNA sequences, the intrastrand ones always dominate the charge transfer when the excess charge moves close to the final acceptor.
15 citations
TL;DR: In this paper, an accurate numerical consideration of 1D spinless fermion model with next-nearest neighbor (NNN) interactions is carried out for the electron concentrations 4/7.
Abstract: An accurate numerical consideration of 1D spinless fermion model with next-nearest neighbour (NNN) interactions is carried out for the electron concentrations 4/7. It is shown that depending on the parameters of the model it can be either Luttinger liquid or bipolaron liquid. In the former case competing interactions can result in a smooth behavior of one-electron distribution function at the Fermi surface with a divergence in the second derivative with respect to the quasimomentum (and not in the first one, as usual). In this connection, uncommon photoemission spectra for some 1D conductors can be explained qualitatively.
15 citations