Dresden 2014 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
TT: Fachverband Tiefe Temperaturen
TT 80: Low-Dimensional Systems - Poster Session
TT 80.4: Poster
Mittwoch, 2. April 2014, 15:00–19:00, P2
Electronic reconstruction at the isopolar LaTiO3/LaFeO3 interface — •Judith Gabel1, Josée E. Kleibeuker1,2, Zhicheng Zhong3, Hiroaki Nishikawa4, Andreas Müller1, Florian Pfaff1, Dave H.A. Blank2, Michael Sing1, Gertjan Koster2, Karsten Held3, Ralph Claessen1, and Guus Rijnders2 — 1Physikalisches Institut and Röntgen Center for Complex Materials Systems (RCCM), Universität Würzburg — 2Faculty of Science and Technology and MESA+ Institute for Nanotechnology, University of Twente — 3Institute of Solid State Physics, Vienna University of Technology — 4B.O.S.T., Kinki University
We report the formation of a new non-magnetic Mott insulating phase (U =0.5 eV) at the isopolar interface between two insulating antiferromagnets, LaTiO3 and LaFeO3. The formation is driven by the combination of electrochemical energy, which can be described by O band alignment, and crystal field splitting energy of the t2g and eg bands. As a result of these two driving forces, the Fe 3d bands rearrange and electrons are transferred from Ti to Fe. Using X-ray photoelectron spectroscopy, we find a strong electron transfer of almost 1 e−/interface unit cell. The shown route for interfacial electronic reconstruction opens possibilities to design new functional oxide heterointerfaces.