paper

Design of the electronic structure of poly-MTO

arXiv:cond-mat/0504553 · doi:10.1016/j.physb.2005.01.093

Abstract

Polymeric methyltrioxorhenium (poly-MTO) is the first member of a new class of organometallic hybrids which adopts the structural motives and physical properties of classical perowskites in two dimensions. In this study we demonstrate how the electronic structure of poly-MTO can be tailored by intercalation of organic donor molecules such as tetrathiafulvalene (TTF). With increasing donor intercalation the metallic behavior of the parent compound, (CH $_{3}$ ) $_{0.92}$ ReO $_{3} \cdot x$ TTF ( $x = 0$ ) becomes suppressed leading to an insulator at donor concentrations $x$ larger than 50. Specific heat, electric resistance and magnetic susceptibility studies indicate that an increasing amount of TTF causes the itinerant electrons of the poly-MTO matrix to localize.

2 pages, 3 figures, SCES04