Deducing correlation parameters from optical conductivity in the Bechgaard salts

Abstract

Numerical calculations of the kinetic energy of various extensions of the one-dimensional Hubbard model including dimerization and repulsion between nearest neighbours are reported. Using the sum rule that relates the kinetic energy to the integral of the optical conductivity, one can determine which parameters are consistent with the reduction of the infrared oscillator strength that has been observed in the Bechgaard salts. This leads to improved estimates of the correlation parameters for both the TMTSF and TMTTF series.

12 pages, latex, figures available from the author.

References in corpus (4)

• Phase diagram of the one-dimensional extended Hubbard model with attractive and/or repulsive interactions at quarter filling
• Charge gap in the one--dimensional dimerized Hubbard model at quarter-filling
• Metal-insulator and insulator-insulator transitions in the quarter-filled band organic conductors
• Susceptibility of the one-dimensional, dimerized Hubbard model

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