Design of the electronic structure of poly-MTO

Details Design of the electronic structure of poly-MTO Design of the electronic structure of poly-MTO

2005-04-21

arxiv.org/abs/cond-mat/0504553v1

Physics

Condensed Matter

Materials Science

2 pages, 3 figures, SCES04

Scientific paper

10.1016/j.physb.2005.01.093

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.

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