Abstract
We present an experimental study of the thermo emf of a two-dimensional electron-hole system in a 21 nm HgTe quantum well in the presence of magnetic field. The first experimental observation of Nernst-Ettingshausen effect in a 2D semimetal is reported. The comparison between theory and experiment shows that the thermo emf is determined by two contributions: The diffusion and the phonon drag, with the latter contribu-tion several times greater than the first. The conclusion is drawn about the important role of electron-hole scat-tering in the formation of both thermoelectric power mechanisms.
Original language | English |
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Pages (from-to) | 5-10 |
Number of pages | 6 |
Journal | Fizika Nizkikh Temperatur |
Volume | 47 |
Issue number | 1 |
Publication status | Published - Jan 2021 |
Keywords
- 2D semimetal
- Diffusion
- Phonon drag
- Quantum well