Quantitative interpretation of thermopower data for composite fermions in a half-filled Landau level
UNSPECIFIED. (1999) Quantitative interpretation of thermopower data for composite fermions in a half-filled Landau level. PHYSICAL REVIEW LETTERS, 83 (23). pp. 4820-4823. ISSN 0031-9007Full text not available from this repository.
Thermopower data for two 2DEGs with nu = 1/2 at temperatures 0.2 less than or equal to T less than or equal to 1.2 K are explained using the composite fermion (CF) approach. Phonon-drag thermopower dominates at all temperatures and is treated within the Cantrell-Butcher framework. For T greater than or equal to 1 K the calculated values agree with the data very well. At lower T the theory increasingly underestimates the data. This discrepancy is removed completely by modifying the CF-phonon piezoelectric coupling to account for the Chern-Simons gauge field. The only adjustable parameter is the CF mass which is taken to be 1.5m(c).
|Item Type:||Journal Article|
|Subjects:||Q Science > QC Physics|
|Journal or Publication Title:||PHYSICAL REVIEW LETTERS|
|Publisher:||AMERICAN PHYSICAL SOC|
|Date:||6 December 1999|
|Number of Pages:||4|
|Page Range:||pp. 4820-4823|
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