28–31 Aug 2018
EPFL
Europe/Zurich timezone

【844】 EPR Study of Spin Dependent Charge Transfer Processes at Functionalized Electrodes

29 Aug 2018, 18:30
1h 30m
Salle polyvalente (EPFL)

Salle polyvalente

EPFL

Poster Magnetism and Spintronics at the Nanoscale Poster Session

Speaker

Felix Blumenschein (EPFL)

Description

We want to look for a spin-dependence in the charge transfer that occurs at the interface between an electrode and an electrolyte. We are using p-GaAs and GaN/AlGaN functionalized with chiral molecules as working electrodes in a methyl-viologen solution. To avoid magneto-hydrodynamic effects, we use electrically detected electron paramagnetic resonance (ED-EPR) to detect a spin effect without changing the magnetic field significantly. For various fields around the resonance condition, we measure the cell current while scanning the working electrode potential through both methyl viologen reduction peaks. We monitor sample-orientation dependent spin resonance for the potential modulated current of the cell when the working electrode is functionalized with chiral-molecules.

Author

Felix Blumenschein (EPFL)

Co-authors

Mika Antero Tamski Prof. Jean-Philippe Ansermet (Institute of Physics, Ecole Polytechnique Federale de Lausanne (EPFL)) Christophe Roussel Eilam Z. Smolinsky Claudio Fontanesi Ron Naaman

Presentation materials

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