Volume 124, Number 2, October 2018
|Number of page(s)||7|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||14 November 2018|
Thermal and thermoelectric transport coefficients for a two-dimensional SDW metal with weak disorder: A memory matrix calculation
Instituto de Física, Universidade Federal de Goiás - 74.001-970, Goiânia-GO, Brazil
Received: 4 June 2018
Accepted: 15 October 2018
We calculate the thermal and thermoelectric transport coefficients for a two-dimensional spin-density-wave metal in the presence of weak disorder and under an external magnetic field using the Mori-Zwanzig memory matrix formalism. As a consequence, we obtain that although the Seebeck coefficient S displays a relatively conventional linear dependence on the temperature of the system, the Nernst coefficient ν exhibits a clear signature of bad-metallicity within the so-called strange metal regime described by the model. This result agrees qualitatively with experimental transport data obtained for many cuprate superconductors around optimal doping.
PACS: 71.10.Hf – Non-Fermi-liquid ground states, electron phase diagrams and phase transitions in model systems / 74.20.-z – Theories and models of superconducting state / 74.20.Mn – Nonconventional mechanisms
© EPLA, 2018
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