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Article overview
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Seebeck effect in dilute two-dimensional electron systems: temperature dependencies of diffusion and phonon-drag thermoelectric powers | | S. Y. Liu
; X. L. Lei
; Norman J. M. Horing
; | | Date: |
7 Jun 2011 | | Abstract: | Considering screeening of electron scattering interactions in terms of the
finite-temperature STLS theory and solving the linearized Boltzmann equation
(with no appeal to a relaxation time approximation), we present a theoretical
analysis of the low-temperature Seebeck effect in two-dimensional
semiconductors with dilute electron densities. We find that the temperature
($T$) dependencies of the diffusion and phonon-drag thermoelectric powers
($S_d$ and $S_g$) can no longer be described by the conventional simple
power-laws. As temperature increases, $|S_d|/T$ decreases when $Tgtrsim 0.1
epsilon_F$ ($epsilon_F$ is the Fermi energy), while $|S_g|$ first increases
and then falls, resulting a peak located at a temperature between
Bloch-Gr"uneisen temperature and $epsilon_F$. | | Source: | arXiv, 1106.1262 | | Services: | Forum | Review | PDF | Favorites | |
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