Deducing correlation parameters from optical conductivity in the Bechgaard salts

Details Deducing correlation parameters from optical conductivity in the Bechgaard salts Deducing correlation parameters from optical conductivity in the Bechgaard salts

1995-02-17

arxiv.org/abs/cond-mat/9502074v1

Phys. Rev. B 52, 4788 (1995).

Physics

Condensed Matter

12 pages, latex, figures available from the author.

Scientific paper

10.1103/PhysRevB.52.4788

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.

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