EPR Study on Metal-to-Nonmetal Transition in the Quasi-One-Dimensional Conductor (TMTTF)₂ClO₄

Abstract

We present the detailed EPR results on the single chain 1-d conductor of the ion-radical salt (TMTTF)₂ClO₄ in the temperature range between 77 K and 373 K above the anion ordering phase transition temperature. The spin susceptibility results reveal the gradual metal-to-nonmetal transition around 230 K. This gives us a clue to understand the transport properties as well as the dynamical behaviors of the electrons. The anomalous temperature dependence of the g-factor is observed.