Observation of Composite-fermion Thermopower At Half-filled Landau-levels
(1994) Physical Review. B, Condensed Matter — Vol. 50, n° 7, p. 4969-4972 (1994)
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- Abstract
- Measurements of the diagonal magnetothermopower (S-xx) of a high-quality two-dimensional hole system reveal that the diffusion regime (T < 100 mK), S-xx at filling factors v = 1/2 and 3/2 depends approximately linearly on temperature and has a much smaller magnitude than expected for noninteracting particles at half-filled Landau levels. We show that both the temperature dependence and the magnitude of S-xx at these two fillings can be explained remarkably well based on a recently proposed particle-flux composite-fermion picture.
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Ying, X., Bayot, V., Santos, MB., & Shayegan, M. (1994). Observation of Composite-fermion Thermopower At Half-filled Landau-levels. Physical Review. B, Condensed Matter, 50(7), 4969-4972. https://doi.org/10.1103/PhysRevB.50.4969 (Original work published 1994)