Low temperature study of the mixed donor system (TMTSF1−x TMTTF x )2PF6: Crystal structure, ESR and transport property

摘要

The phase diagram of the mixed donor quasi one-dimensional (Q1D) metallic system (TMTSF1−xTMTTFx)2PF6 has been studied. The study on the mixed donor systems helps us to establish not yet clarified phase boundaries in the Q1D system. We showed dependencies of properties on the donor mixing percentage for crystal parameters, resistivity, ESR (intensity and line width). ESR results show clear changes in the susceptibility and line width around 40 K. This result may indicate the existence of new boundary determined by the microscopic method on the Q1D phase.