We report the magnetotransport properties up to 7 T in the organic highly conducting Langmuir-Blodgett(LB) films formed by a molecular association of the electroactive donor molecule bis(ethylendioxy)tetrathiafulvalene (BEDO-TTF) and stearic acid CH3(CH2)16COOH. We show the logarithmic decrease of dc conductivity and the negative transverse magnetoresistance at low temperature. They are interpreted in the weak localization of two-dimensional (2D) electronic system based on the homogeneous conducting layer with the molecular size thickness of BEDO-TTF. The electronic length with phase memory is given at the mesoscopic scale, which provides for the first time evidence of the 2D coherent charge transport in the conducting LB films.
@article{arxiv.cond-mat/0010464,
title = {Formation of two-dimensional weak localization in conducting Langmuir-Blodgett films},
author = {Yasuo Ishizaki and Mitsuru Izumi and Hitoshi Ohnuki and Krystyna Kalita-Lipinska and Tatsuro Imakubo and Keiji Kobayashi},
journal= {arXiv preprint arXiv:cond-mat/0010464},
year = {2009}
}