Novel Magnetism of EDO-TTFX 2 Salts (X=Br, I)

Abstract

Charge transfer complexes of EDO-TTFX, (X=Br, I) form low-D structures featured with coordination-like-bond formation of X with counter anions, giving unconventional magnetic conductive systems with magnetic anions. (EDO-TTFI 2 ) 2 M(nmt) 2 (M=Pt. Ni) are 1D conductors interacting with ferromagnetic ID M(mnt) 2 chains. Applying pressure gives a unique ferromagnetic domain formation. 2D (EDO-TTFBr 2 ) 2 FeBr 4 is metallic, where ID FeBr 4 chains take an antiferromagnetic transition at a very high T N (=13.5K) with a short-range-order effect around the resistivity minimum (30K), suggesting the presence of strong π-d interaction.