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Thermoelectric power near the atomic limit of the hubbard model
Author(s) -
Ihle D.,
Eifrig Th.
Publication year - 1979
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220910113
Subject(s) - seebeck coefficient , condensed matter physics , hubbard model , thermoelectric effect , limit (mathematics) , sign (mathematics) , zero temperature , electron , physics , materials science , quantum mechanics , mathematics , superconductivity , mathematical analysis
The thermoelectric power in the one‐dimensional Hubbard model near the atomic limit is calculated as function of temperature and electron density n . It is shown, that for low temperatures the calculation of the thermopower in the atomic limit by Bari and Beni is not justified. Taking into account a finite bandwidth by means of the alloy analogy approximation a vanishing zero‐temperature thermopower is obtained. For 0.5 ⪅ n < 1 the thermopower increases with increasing temperature, reaches a maximum, decreases, changes sign, and saturates at high temperatures.