Thermoelectric power in Hubbard-model systems with different densities:-methylphenazinium-tetracyanoquinodimethane (NMP-TCNQ), and quinolinium ditetracyanoquinodimethane
- 15 January 1976
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 13 (2), 641-646
- https://doi.org/10.1103/physrevb.13.641
Abstract
We have measured the Seebeck coefficient of single crystals of the organic charge transfer salts -methylphenazinium-tetracyanoquinodimethane (NMP-TCNQ) and quinolinium- over the temperature range 300-20°K. The results are compared to simple band theory, which is found inadequate. A comparison with recent calculations in the atomic limit of the Hubbard model qualitatively distinguishes NMP as being close to a half-filled Hubbard band and quinolinium close to a quarter-filled Hubbard band.
Keywords
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