Buscar
Mostrando ítems 1-10 de 125
Electronic structure of polyacetylene with bonded oxygen
(1992-09-01)
In this work we have studied the electronic structure of finite polyacetylene chains with structural oxygen-bonding models following data from 13C-NMR experiments. We have used a combination of Austin Method One and ...
Extended states in disordered doped polyacetylene chains
(1992-09-01)
In this work we study the electronic structure of ordered and disordered distributions of soliton-type defects along large, finite chains of trans-polyacetylene (trans-PA), as a function of the concentration of defects. ...
Extended states in disordered doped polyacetylene chains
(1992-09-01)
In this work we study the electronic structure of ordered and disordered distributions of soliton-type defects along large, finite chains of trans-polyacetylene (trans-PA), as a function of the concentration of defects. ...
Electronic structure of polyacetylene with bonded oxygen
(1992-09-01)
In this work we have studied the electronic structure of finite polyacetylene chains with structural oxygen-bonding models following data from 13C-NMR experiments. We have used a combination of Austin Method One and ...
Insulator-to-metal transition driven by clustering of solitons in polyacetylene
(1997-03-15)
It's believed that the simple Su-Schrieffer-Heeger Hamiltonian can not predict the insulator to metal transition of transpolyacetylene (t-PA). The soliton lattice configuration at a doping level y=6% still has a semiconductor ...
Insulator-to-metal transition driven by clustering of solitons in polyacetylene
(1997-03-15)
It's believed that the simple Su-Schrieffer-Heeger Hamiltonian can not predict the insulator to metal transition of transpolyacetylene (t-PA). The soliton lattice configuration at a doping level y=6% still has a semiconductor ...
Excitation spectrum for ultrafast photogeneration of charged solitons in polyacetylene
(Elsevier B.V., 2003-04-04)
Ultrafast photoinduced absorption by IRAV modes is used to detect charged solitons in oriented polyacetylene. We find that soliton pairs are photogenerated within our time resolution of similar to250 fs with similar to100% ...
POLYACETYLENES OF BRAZILIAN SPECIES OF DIDYMOPANAX (ARALIACEAE)
(Pergamon-elsevier Science LtdOxfordInglaterra, 1992)