Article (Published version) (1.3 MB) - 
Free accessOther version: https://link.aps.org/doi/10.1103/PhysRevB.93.195309
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Scientific Article
unige:114134 
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Large phonon-drag enhancement induced by narrow quantum confinement at the LaAlO3/SrTiO3 interface |
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| Authors | ||
| Published in | Physical Review. B, Condensed Matter. 2016, vol. 93, no. 19, 195309 | |
| Abstract | The thermoelectric power of the two-dimensional electron system (2DES) at the LaAlO3/SrTiO3 interface is explored below room temperature, in comparison with that of Nb-doped SrTiO3 single crystals. For the interface, we find a region below T=50 K where thermopower is dominated by phonon drag, whose amplitude is hugely amplified with respect to the corresponding bulk value, reaching values ∼mV/K and above. The phonon-drag enhancement at the interface is traced back to the tight carrier confinement of the 2DES, and represents a sharp signature of strong electron-acoustic phonon coupling at the interface. | |
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| Full text |
Article (Published version) (1.3 MB) - Free access Other version: https://link.aps.org/doi/10.1103/PhysRevB.93.195309 |
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| Structures | ||
| Research group | Groupe Triscone | |
| Citation (ISO format) | PALLECCHI, I. et al. Large phonon-drag enhancement induced by narrow quantum confinement at the LaAlO3/SrTiO3 interface. In: Physical Review. B, Condensed Matter, 2016, vol. 93, n° 19, p. 195309. doi: 10.1103/PhysRevB.93.195309 https://archive-ouverte.unige.ch/unige:114134 |
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