Dresden 2017 – wissenschaftliches Programm
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DS: Fachverband Dünne Schichten
DS 38: Focussed Session: Memristive Devices for Neuronal Systems I
DS 38.4: Vortrag
Donnerstag, 23. März 2017, 10:45–11:00, CHE 89
Quantitative spectroscopic analysis of memristive thin films — •Julian Strobel1, Mirko Hansen2, Krishna Kanth Neelisetty3, Venkata Sai Kiran Chakravadhanula3, Hermann Kohlstedt2, and Lorenz Kienle1 — 1Institut für Materialwissenschaft, Technische Fakultät der CAU Kiel, Kaiserstr. 2, 24143 Kiel — 2Institut für Elektrotechnik, Technische Fakultät der CAU Kiel, Kaiserstr. 2, 24143 Kiel — 3Institut für Nanotechnologie, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen
Memristive NbOx/AlOx tunnel barriers have been analyzed by electron energy-loss spectroscopy to the effect of gaining information on the electronic structure. Slight oxidation of the bottom electrode, likely occurring during fabrication of the overlying oxide layers, is observed but is expected to have little to no effect on the I-V characteristics. The AlOx layer was found to exhibit states within the bandgap caused by oxygen vacancies. A model for quantification of the oxygen vacancies is presented and discussed with respect to expected accuracy.