Molecular Crystals and Liquid Crystals, Vol.376, 263-268, 2002
Two-dimensional electronic system in conducting Langmuir-Blodgett film of BEDO-TTF and stearic acid
The bis-ethylenedioxy-tetrathiafulvalene (BEDO-TTF, BO) and stearic acid (CH3[CH2](16)COOH) Molecules form a highly conducting Y-type Langmuir-Blodgett (LB) film with a specific charge transfer between BO and stearic acid. The (BO)(2)(+) molecular layers, 20 Angstrom thickness in each, alternate with stearic acid layers. At low temperature, weak carrier localization appears in the conduction properties. The transverse magnetoconductance shows that the coherent carrier diffusion occurs in two-dimension (2D). The temperature variation of the carrier phase relaxation distance indicates that the dephasing by quasi-elastic carrier-carrier scattering dominates in each (BO)(2)(+) based conducting plane.