Diffusion Thermopower at Even Denominator Fractions

Details Diffusion Thermopower at Even Denominator Fractions Diffusion Thermopower at Even Denominator Fractions

1996-06-22

arxiv.org/abs/cond-mat/9606161v1

Physics

Condensed Matter

Latex, 12 pages, Nordita report

Scientific paper

10.1103/PhysRevB.54.R14317

We compute the electron diffusion thermopower at compressible Quantum Hall states corresponding to even denominator fractions in the framework of the composite fermion approach. It is shown that the deviation from the linear low temperature behavior of the termopower is dominated by the logarithmic temperature corrections to the conductivity and not to the thermoelectric coefficient, although such terms are present in both quantities. The enhanced magnitude of this effect compared to the zero field case may allow its observation with the existing experimental techniques.

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