Blumenschein, FelixTamski, MikaRoussel, ChristopheSmolinsky, Eilam Z. B.Tassinari, FrancescoNaaman, RonAnsermet, Jean-Philippe2020-03-032020-03-032020-03-032020-01-2110.1039/c9cp04681jhttps://infoscience.epfl.ch/handle/20.500.14299/166653WOS:000509371400091Chirality-induced spin selectivity is evidenced by exciting the spin resonance of radicals in an electrochemical cell where the working electrode is covered with a chiral self-assembled monolayer. Because the electron transfer to and from the paramagnetic radical is spin dependent, the electrochemical current changes at resonance. This electrically-detected magnetic resonance (EDMR) is monitored by a lock-in detection based on electrode voltage modulation, at a frequency that optimizes the sensitivity of the differential conductance to the electrode charge transfer process. The method is validated using p-doped GaAs electrodes in which the conduction band electrons are hyperpolarized by a well-known method of optical spin pumping with circularly polarized light. Gold electrodes covered with peptides consisting of 5 alanine groups (Al5) present a relative current change of up to 5 x 10(-5) when the resonance condition is met, corresponding to a spin filtering efficiency between 6 and 19%.Chemistry, PhysicalPhysics, Atomic, Molecular & ChemicalChemistryPhysicsn-typeelectrical detectionin-situfieldtransmissionpolarizationkineticsgaasepresrtext::journal::journal article::research article