New concepts for high-sensitivity pulsed electrically detected magnetic resonance

The electrical detection of magnetic resonance (EDMR) has recently developed into a highly versatile tool which allows the detailed investigation of spin-dependent charge transport processes and paramagnetic defects in semiconductor materials and devices down to the nanometer scale with demonstrated sensitivities of as few as 50 spins. In this project, we combine the latest advances of pulsed EDMR with pulse shaping and optimal control theory to increase the sensitivity and spectroscopic application range of pulsed EDMR. Furthermore, we develop new broadband to deliver pulsed microwaves to the sample, which are expected to lead to a significantly more efficient use of microwave power and to a reduction of the complexity and cost of pulsed magnetic resonance. The improved methods shall be applied to the study of spin-dependent recombination in materials used in thin-film photovoltaics and at silicon/silicondioxide interfaces relevant to microelectronic devices.

M. S. Brandt

Prof. Dr. Martin S. Brandt

Walter Schottky Institut, Technische Universität München, Am Coulombwall 4, 85748 Garching
Tel.: +49 89 289-12758 Email: brandt@wsi.tum.de
Fax: +49 89 289-12737 Website: http://
M. Stutzmann

Prof. Dr. Martin Stutzmann

Walter Schottky Institut, Technische Universität München, Am Coulombwall 4, 85748 Garching
Tel.: +49 89 289-12760 Email: stutz@wsi.tum.de
Fax: +49 89 289-12737 Website: http://