CONDUCTION-ELECTRON SPIN-RESONANCE IN LANGMUIR-BLODGETT-FILMS OF A CHARGE-TRANSFER COMPLEX

Electron-spin-resonance measurements were performed on the newly devel oped conducting Langmuir-Blodgett films consisting of a charge-transfe r complex of bis(ethylenedioxy)tetrathiafulvalene (BO) and decyltetrac yanoquinodimethane. The temperature-dependent spin susceptibility and linewidth clearly indicate that the major region of the films has a me tallic nature. The density of states has been estimated as 3.5 states/ eV per BO molecule, assuming no electron correlation. No metal-insulat or transition has been detected at least down to 50 K, while an anomal y seen in the linewidth around 140 K suggests a certain kind of struct ural transition.