Phonon drag of electrons in Ag2S
| Autor: | R. I. Selim-zade, S. M. Abdullayev, F. F. Aliev, S. A. Aliev, Z. S. Gasanov |
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| Rok vydání: | 2010 |
| Předmět: | |
| Zdroj: | Semiconductors. 44:734-736 |
| ISSN: | 1090-6479 1063-7826 |
| DOI: | 10.1134/s1063782610060084 |
| Popis: | The temperature dependences of the heat-conductivity coefficient χ and the thermopower 6h of Ag2S are investigated in the range of 4.2–300 K. It is found that the value of 6h sharply increases (6h ∞ T-3) with decreasing T at T < 100 K and passes through a maximum at 16–18 K. The heat-conductivity coefficient passes through a maximum at ≈30 K. The sharp increase in 6h is found to be caused by the effect of long-wavelength-phonon drag of electrons. It is shown that the shift of the 6h and χ peaks, as well as the temperature dependence of the phonon thermopower 6hph ∞ T-3, agrees with the Herring theory. |
| Databáze: | OpenAIRE |
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