Localization of electronic states in DNA-like double strand model / Localização eletronica em cadeias duplas : aplicação ao DNA

AUTOR(ES)

Hamilton Carrillo Nunez

DATA DE PUBLICAÇÃO

2008

RESUMO

In this work we discuss and compare different definitions for localization of electronic states in quase-one-dimensional systems: the 1-D case of polianilines chains and DNA-like molecules. In order to establish ranges of equivalence, the localization length from both, the conductance and participation ratio, is computed. For the 1-D case the con-ductance is obtained by mean of the transfer matrix method, while the conductance for DNA-like double strands are calculated by mean of the recursive Green?s function method since the transfer matrix method shows numerical instabilities. The final results suggest also criteria to infer the extension of wave function in mesoscopic systems with-in the diffusive transport regime as a complementary information to the localization length

ASSUNTO(S)

electronic localization dna sistemas mesoscopicos mesoscopic systems localização eletronica dna

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