Negative charging energy in LaAlO${}_3$/SrTiO${}_3$ quantum dots induced by SrTiO${}_3$ polarization

J. Czarnecki, A. Sierant, B. Szafran +12

We propose a microscopic mechanism for the negative charging energy in LaAlO${}_3$/SrTiO${}_3$ quantum dots, arising from the electrostatic image charge associated with the paraelectri…