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PGI Colloquium:

Prof. Dr. Fabio Miletto Granozio,
CNR-SPIN, University of Naples Federico II, Naples, Italy
 

PGI Lecture Hall, Building 04.8, 2nd Floor, Room 365

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09 Nov 2018 11:00

Charge Transfers Across Oxide Interfaces Hosting a 2-Dimensional Electron Gas

GranozioCopyright: Prof. Dr. Granozio

The origin of the carriers populating the 2-Dimensional Electron Gas (2DEG) found at the LaAlO3/SrTiO3 and similar interfaces is still controversial. While a number of individual experiments seem to correlate the 2DEG formation with specific material properties, as LaAlO3 polarity or oxygen vacancy formation, a model able to show a predictive power and to account for the conductivity of different oxide interfaces, having either a crystalline or an amorphous overlayer, is still missing.

In this talk, a number of specifically designed experiments performed on crystalline-LaAlO3/SrTiO3, on more complex crystalline heterostructures (LaAlO3/BaTiO3/SrTiO3, LaAlO3/EuTiO3/SrTiO3), on amorphous-LaAlO3/SrTiO3, and on hybrid heterostructures (amorphous-LaAlO3/ crystalline-LaAlO3/SrTiO3), will be presented. The constraints set by these experiments on the possible applicable mechanisms will be shown and discussed.

Contact

Stephan Menzel
Phone: +49 2461 61-6074
email: st.menzel@fz-juelich.de

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