Thermopower of Composite Fermions

Bayot, Vincent;Grivei, E.;Manoharan, HC.;Ying, X.;Shayegan, M.
(1995) Physical Review. B, Condensed Matter — Vol. 52, n° 12, p. R8621-R8624 (1995)

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  • Bayot, VincentUCLouvain
    Author
  • Grivei, E.
    Author
  • Manoharan, HC.
    Author
  • Ying, X.
    Author
  • Shayegan, M.
    Author
Abstract
Measured diffusion thermopower of a low-disorder two-dimensional hole system in the extreme quantum limit is used to probe the thermal properties of the recently proposed particle-flux composite fermions (CF's). The data are consistent with the CF's exhibiting the integral quantum Hall effect away from filling factor nu=1/2. The magnitudes of the thermopower maxima between the fractional quantum Hall states yield an estimate for the CF Landau-level broadening Gamma(CF) which agrees well with Gamma(CF) deduced from the analysis of the excitation energy gaps for the fractional liquid states.
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Bayot, V., Grivei, E., Manoharan, HC., Ying, X., & Shayegan, M. (1995). Thermopower of Composite Fermions. Physical Review. B, Condensed Matter, 52(12), R8621-R8624. https://doi.org/10.1103/PhysRevB.52.R8621 (Original work published 1995)