Thermopower of composite fermions

V. Bayot, E. Grivei, H. C. Manoharan, X. Ying, M. Shayegan

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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 ν=1/2. The magnitudes of the thermopower maxima between the fractional quantum Hall states yield an estimate for the CF Landau-level broadening ΓCF, which agrees well with ΓCF deduced from the analysis of the excitation energy gaps for the fractional liquid states.

Original languageEnglish (US)
Pages (from-to)R8621-R8624
JournalPhysical Review B
Volume52
Issue number12
DOIs
StatePublished - Jan 1 1995

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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    Bayot, V., Grivei, E., Manoharan, H. C., Ying, X., & Shayegan, M. (1995). Thermopower of composite fermions. Physical Review B, 52(12), R8621-R8624. https://doi.org/10.1103/PhysRevB.52.R8621