Berlin 2005 – wissenschaftliches Programm

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HL: Halbleiterphysik

HL 17: Poster Ib

HL 17.27: Poster

Freitag, 4. März 2005, 16:30–19:00, Poster TU F

Investigation of Schottky diodes in high magnetic fields — •Matthias Schmidt, Holger von Wenckstern, Rainer Pickenhain, Michael Ziese, Pablo Esquinazi, and Marius Grundmann — Universität Leipzig, Institut für Experimentelle Physik II, Linnestrasse 5, 04103 Leipzig

We report on investigations of Schottky diodes in magnetic fields ranging from 0 to 9 T. The contacts are realized on n-GaAs by thermal evaporation of Ni or Au. The diodes are characterized by current-voltage, capacitance-voltage, and admittance measurements. These measurements are done for temperatures between 10 K and 300 K in dependence on the applied magnetic field. The scope of this contribution is to determine the influence of the ferromagnetic Schottky contact realized with Ni on the interface properties compared to the diamagnetic contact realized with Au.