Electrically detected magnetic resonance on nanoscopic devices

This project aims to establish electrically detected magnetic resonance (EDMR) on nano-scale devices. The EDMR method is sensitive to spin-dependent transport processes in electronic devices. Its sensitivity is much higher than that of traditional, microwave-photon detected, electron spin resonance (ESR). Using nano-devices will lead to even higher sensitivity by confining the transport paths to one dimension. It will also help distinguish between bulk and interface effects and open new ways to control EDMR signals, e.g., using electrostatic gates. This collaborative project will combine the expertise of two groups with prior experience in EDMR (JGU Mainz) and nano-devices (FZ Jülich). We will focus on supramolecular fullerene nanowires. Research will progress from network structures containing inner contact interfaces between overlapping wires to individually contacted wires. Furthermore, controlled magnetic doping will be introduced to EDMR to pinpoint locations at which the spin-dependent processes occur. Given sufficient sensitivity, few or even single deliberately engineered magnetic impurities may be detectable using this approach.
W. Harneit

Dr. Wolfgang Harneit

Johannes Gutenberg-Universität Mainz, Institut für Physikalische Chemie, Duesbergweg 10 -14, 55099 Mainz
Tel.: +49 6131 39-28190 Email: harneit@uni-mainz.de
Fax: +49 6131 39-21801 Website: Harneit group
C. Meyer

Dr. Carola Meyer

Forschungszentrum Jülich, Peter Grünberg Institut, PGI-6: Elektronische Eigenschaften, 52425 Jülich
Tel.: +49 2461 61-4627 Email: c.meyer@fz-juelich.de
Fax: +49 2461 61-2620 Website: “Electronic Properties” Institute