Jean-Marc Triscone awarded a honorary doctorate
by the Norwegian University of Science and Technology (NTNU)
Read morenext Q-MAC meetings in 2018:
3rd Q-MAC symposium in Venice, May 22-25, 2018.
Next regular meeting in Paris, November 27-28, 2018.
Read morePublication Detail / Abstract
Large phonon-drag enhancement induced by narrow quantum confinement at the LaAlO3/SrTiO3 interface
published in Physical Review B on May 12, 2016
> Full text via publisher
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.
< Back
