Daten zum Projekt
Initiative: | Trilaterale Partnerschaften – Kooperationsvorhaben zwischen Wissenschaftler(inne)n aus der Ukraine, Russland und Deutschland |
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Bewilligung: | 29.02.2016 |
Laufzeit: | 3 Jahre |
Projektinformationen
The recently discovered ability to purposely write and erase nanoscopic conductive channels, the so-called charged domain walls (CDWs), across wide-bandgap and uniaxial ferroelectric LiNbO3 (LNO) single crystals, forms an emergent feature for novel nanoelectronic applications and devices. Such CDWs are exactly in the focus of the current project. The goal is to establish an in-depth understanding of those physicochemical parameters that allow increasing and tuning this conductivity along CDWs. Optimizing the charge transport thus needs a twofold approach, with (a) improving the electron-hopping rate along charged domain walls for instance by doping domain walls within these single crystals, as well as (b) lowering the injection barrier at the interface between DWs and surface electrodes. Both aspects will be investigated under systematic variation of defect and doping concentration. Furthermore, the impact of the applied poling method on the form and electronic transport properties of CDWs in LNO will be investigated. Lastly, the concept of creating time-stable CDWs will be extended also to other uniaxial ferroelectrics, such as LiTaO3 (LTO) and SrxBa1-xNb2O6 (SBN).
Projektbeteiligte
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Prof. Dr. Lukas M. Eng
Technische Universität Dresden
Mathematik und Naturwissenschaften
Institut für Angewandte Physik
Hermann-Krone-Bau
Dresden
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Dr. Oleg Sevostyanov
Kemerovo State University
Physics Department
Institute of Fundamental Sciences
Kemerovo
Russland
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Prof. Liudmila Ivleva
Russian Academy of Sciences
A.M.Prokhorov General Physics Institute
Moskau
Russland
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Dr. MIKHAIL Goulkov
National Academy of Sciences of Ukraine
Institute of Physics
Kiev
Ukraine