X-ray-scattering study of the metal-phthalocyanine-iodine quasi-one-dimensional molecular conductors

M. Poirier*, J. P. Pouget, J. A. Thompson, B. M. Hoffman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

X-ray-scattering measurements on several newly synthesized, high-purity metal-phthalocyanine-iodine quasi-one-dimensional conductors reveal that, in contrast to previous materials, the iodine sublattice is ordered at all temperatures. The crystal symmetry is thus modified from tetragonal P4/mcc to monoclinic P2/c with a supercell unit volume three times larger. This new symmetry, which does not modify the dispersion of the one-dimensional band structure in the vicinity of the Fermi level, is consistent with the metallic behavior of the M(pc)I family. However, a metal-insulator transition could be induced if the c glide-plane symmetry of P2/c is broken due to the stabilization of a 2kF density-wave ground state.

Original languageEnglish (US)
Pages (from-to)14861-14866
Number of pages6
JournalPhysical Review B
Volume51
Issue number21
DOIs
StatePublished - Jan 1 1995

ASJC Scopus subject areas

  • Condensed Matter Physics

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