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Quantitative interpretation of thermopower data for composite fermions in a half-filled Landau level
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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 0031-9007.
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Abstract
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 | ||||
| ISSN: | 0031-9007 | ||||
| Official Date: | 6 December 1999 | ||||
| Dates: |
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| Volume: | 83 | ||||
| Number: | 23 | ||||
| Number of Pages: | 4 | ||||
| Page Range: | pp. 4820-4823 | ||||
| Publication Status: | Published |
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