This title appears in the Scientific Report : 2016 

Experimental and computational study of zero dimensional metallic behavior at the LaLuO3/SrTiO3 interface
Shekhter, Pini (Corresponding author)
Uzan-Saguy, Cecile / Schubert, Jürgen / Amouyal, Yaron / Eizenberg, Moshe
JARA-FIT; JARA-FIT
Halbleiter-Nanoelektronik; PGI-9
Journal of vacuum science & technology / B, 34 (2016) 2, S. 021204 -
New York, NY Inst. 2016
10.1116/1.4943570
Journal Article
Controlling Electron Charge-Based Phenomena
Please use the identifier: http://dx.doi.org/10.1116/1.4943570 in citations.
One of the observed and reported phenomena in heterogeneous interfaces of perovskite oxides isthe presence of a two dimensional electron gas (2DEG). In this study, the imperfect interface that isformed between LaLuO3 and SrTiO3 was studied. It was found using x ray diffraction pole figurethat LaLuO3 is deposited on SrTiO3 in a two-domain structure with alternately charged layers parallelto the surface. First-principles calculations reveal that even though the lattices of the two materialsdo not match, an increase of the total potential is found at the interface between the twolattices. Due to this increased potential, electrons are drawn to the interface; since the interface isnot perfectly epitaxial, 2DEG is not formed and instead semicontinuous 0D metallic segmentsprobed by scanning tunneling microscopy and spectroscopy are spread along the interface on theLaLuO3 side. VC 2016 American Vacuum Society. [