Single crystal x-ray study of pressure-induced metal-insulator transition in (DMeDCNQI) 2Cu

The structures of the metallic and the insulating phases of (DMeDCNQI) 2Cu were solved under pressures of up to 15.8 kbar at room temperature. An angle α representing the deformation of CuN 4 tetrahedron around the Cu atom increases almost linearly with pressure at the rate of about 0.6 deg./ kbar....

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Bibliographic Details
Published in:Synthetic metals 1997-02, Vol.86 (1), p.2073-2074
Main Authors: Nogami, Y., Date, T., Oshima, K., Arimoto, O
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
diffraction and scattering
Electron states
Exact sciences and technology
Metal-insulator transitions and other electronic transitions
Organic semiconductors based on conjugated molecules
Physics
Structural phase transition
X-ray emission
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Summary:The structures of the metallic and the insulating phases of (DMeDCNQI) 2Cu were solved under pressures of up to 15.8 kbar at room temperature. An angle α representing the deformation of CuN 4 tetrahedron around the Cu atom increases almost linearly with pressure at the rate of about 0.6 deg./ kbar. Furthermore, an X-ray diffuse scattering study revealed the presence of a 3 c CDW superlattice structure above 12 kbar in the high pressure insulating phase.
ISSN:0379-6779
1879-3290
DOI:10.1016/S0379-6779(97)81033-8