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HL: Fachverband Halbleiterphysik

HL 35: Poster I

HL 35.5: Poster

Dienstag, 8. März 2016, 15:00–19:00, Poster A

All optical EPR in magnetically doped quantum structures — •Markus Kuhnert, Ilya Akimov, Dmitri Yakovlev, and Manfred Bayer — Experimentelle Physik 2, TU Dortmund

The field of spintronics, which in contrast to electronics, uses the spin instead of charge as information carrier, presents many interesting possibilities. For proper implementation of spintronic devices, research of adequate materials and methods is required. Here we present the results of our research into Manganese doped GaAs quantum wells, which might offer long lived spin coherence as well as spin manipulation mediated by the magnetic Manganese ions. Following initial studies of electron lifetime in Manganese-doped GaAs quantum wells via time resolved Kerr effect and time resolved Photoluminescence measurements, further investigation into such samples is done by Electron paramagnetic resonance measurements. In this case, a method of all optical Electron paramagnetic resonance was developed. This is achieved by intensity and polarization modulation of the incident laser beam by a frequency of about 9.2 GHz and applying varying external magnetic fields.