| AVS 65th International Symposium & Exhibition | |
| Surface Science Division | Tuesday Sessions |
| Session SS-TuP |
| Session: | Surface Science Division Poster Session |
| Presenter: | Mika Tamski, Ecole Polytechnique Fédérale de Lausanne, Switzerland |
| Authors: | M. Tamski, Ecole Polytechnique Fédérale de Lausanne, Switzerland F. Blumenschein, Ecole Polytechnique Fédérale de Lausanne, Switzerland C. Roussel, Ecole Polytechnique Fédérale de Lausanne, Switzerland J.-P. Ansermet, Ecole Polytechnique Fédérale de Lausanne, Switzerland |
| Correspondent: | Click to Email |
The Pauli Exclusion principle is known to result in spin dependent charge transfer, where the current is rectified for spins of the same orientation compared to the spins of opposite orientation.1,2
Similar spin selectivity has been observed for Ferromagnetic electrodes such as Nickel and Cobalt in electrochemical systems, where chiral molecules have been used as spin filters for selecting one spin orientation over the other. 3,4
Here we report the progress concerning our studies of spin dependent charge transfer across a ferromagnetic-electrode/solution interface, using the following methodology (Fig.1, online at organiser's website):
1. Saturating the magnetization of the electrode and polarising the spins of radicals in the solution phase by applying a magnetic field B0.
2. Applying a negative potential to the electrode to induce a charge transfer from the electrode to the paramagnetic species in the solution.
3. Introducing spin-flips of the radical spins with resonant microwave irradiation B1.
4. Detecting the modulation of the reduction current as a function of modulation of the B0 or B1 amplitude, i.e. an electrically detected magnetic resonance (EDMR) experiment.
References:
1 K. Ono, D. G. Austing, Y. Tokura and S. Tarucha, Science, 2002, 297, 1313 LP-1317.
2 A. C. Johnson, J. R. Petta, C. M. Marcus, M. P. Hanson and A. C. Gossard, Phys. Rev. B, 2005, 72, 165308.
3 P. C. Mondal, C. Fontanesi, D. H. Waldeck and R. Naaman, Acc. Chem. Res., 2016, 49, 2560
4 P. C. Mondal, P. Roy, D. Kim, E. E. Fullerton, H. Cohen and R. Naaman, Nano Lett., 2016, 16, 2806–2811.