Negative Magneto-resistance Observed on an Ion-radical Salt of a TTF-based Spin-polarized Donor

Abstract
A novel diselena analogue of TTF-based spin-polarized donor was synthesized. An ion-radical salt of the donor electro-crystallized on an interdigitated electrode with 2 μm gap showed negative magneto-resistance below 15 K. This is the first example detecting the interaction between localized spin and conducting electron in a genuine organic system.