Direct observation of one-dimensional electron spin transport in the organic conductor (FA)2AsF6 by the electron spin echo field gradient technique

Abstract

The orientational dependence of the diffusion constant D of electronic spins has been determined for single crystals of the radical cation salt (fluoranthenyl)2+AsF-6 by electron spin echo experiments in magnetic field gradients at room temperature. The values D∥ = 3.0 cm2 s-1 and D ⊥ = 0.01 cm2 s-1 were obtained for diffusion parallel and perpendicular to the stacking axis of the fluoranthene molecules respectively.