Physical properties of the DMt-TTF salts: a new series presenting antiferromagnetic ground states.

Abstract
The conducting and magnetic properties of three salts of the DMtTTF series are described. Low temperature antiferromagnetic ground states are found for the three compounds. Depending on the anions the crystal organisation is either triclinic (as for the TMTTF salts) or monoclinic. As expected, the position of the magnetic axis is correlated to the crystal symmetry. Finally the origin of the magnetic phase is discussed using the same theoretical framework as for the related TMTTF salts