Chiral, low-resistance organic and nanoscale frameworks that uniquely propagate spin polarized currents

Spin based properties, applications and devices are typically related to ferromagnetic effects and therefore magnetic inorganic materials. The development of organic materials for spintronic applications was long encumbered by its reliance on ferromagnetic electrodes for polarized spin injection. The discovery of the chirality induced spin selectivity (CISS) effect defines a marked departure from this paradigm, as it exploits soft materials, operates at ambient temperature, and eliminates the need for a magnetic electrode. To date, the CISS effect has been explored almost exclusively in molecular insulators. This presentation describes the utility of highly conjugated molecular and nanoscale materials that drive large magnitude CISS effects, generate substantial spin-polarized currents, and define new compositions of matter important for spintronic devices that exploit the CISS effect. A combination of spin polarization Hall device measurements, along with magneto-conductive atomic force microscopy (mC-AFM) and conducting spin-dependent electrochemistry (SDE) data, underscore that these molecular and nanoscale materials display exceptional utility to propagate spin-polarized currents due to their low resistances and long spin lattice relaxation times