X-ray diffuse scattering study of superstructure formation in tetramethyltetraselenafulvalenium perrhenate (TMTSF)2ReO4 and nitrate (TMTSF) 2NO3
- 1 January 1981
- journal article
- Published by EDP Sciences in Journal de Physique Lettres
- Vol. 42 (24) , 543-546
- https://doi.org/10.1051/jphyslet:019810042024054300
Abstract
X-ray diffuse scattering studies of one dimensional conductors (TMTSF) 2ReO4 and (TMTSF)2NO3 reveal the formation of low temperature superstructures which might involve an ordering of the counter ions ReO-4 and NO-3. The superstructure reflections are characterized by wave vectors q = (1/2, 1/2, 1/2) for the perrhenate and q = (1/2, 0, 0) for the nitrate, which double the unit cell volume in both cases. In (TMTSF)2ReO4 this phase transition coincides with the metal insulator transition observed at 180 K, whereas in (TMTSF) 2NO3 it corresponds to a better conducting state observed below 41 KKeywords
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